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In [[mathematics]], the '''method of characteristics''' is a technique for solving [[partial differential equations]].  Typically, it applies to [[first-order partial differential equation|first-order equations]], although more generally the method of characteristics is valid for any [[hyperbolic partial differential equation]].  The method is to reduce a partial differential equation to a family of ordinary differential equations along which the solution can be integrated from some initial data given on a suitable [[hypersurface]].


==Characteristics of first-order partial differential equation==
For a first-order PDE ([[partial differential equations]]), the method of characteristics discovers curves (called '''characteristic curves''' or just characteristics) along which the PDE becomes an [[ordinary differential equation]] (ODE).  Once the ODE is found, it can be solved along the characteristic curves and transformed into a solution for the original PDE.


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For the sake of motivation, we confine our attention to the case of a function of two independent variables ''x'' and ''y'' for the moment. Consider a [[quasilinear]] PDE of the form
 
{{NumBlk|:|<math>a(x,y,z) \frac{\partial z}{\partial x}+b(x,y,z) \frac{\partial z}{\partial y}=c(x,y,z).</math>|{{EquationRef|1}}}}
 
Suppose that a solution ''z'' is known, and consider the surface graph ''z''&nbsp;=&nbsp;''z''(''x'',''y'') in '''R'''<sup>3</sup>. A [[normal vector]] to this surface is given by
 
:<math>\left(\frac{\partial z}{\partial x}(x,y),\frac{\partial z}{\partial y}(x,y),-1\right).\,</math>
 
As a result,<ref>{{harvnb|John|1991}}</ref> equation ({{EquationNote|1}}) is equivalent to the geometrical statement that the vector field
 
:<math>(a(x,y,z),b(x,y,z),c(x,y,z))\,</math>
 
is tangent to the surface ''z''&nbsp;=&nbsp;''z''(''x'',''y'') at every point, for the dot product of this vector field with the above normal vector is zero.  In other words, the graph of the solution must be a union of [[integral curve]]s of this vector field. These integral curves are called the characteristic curves of the original partial differential equation.
 
The equations of the characteristic curve may be expressed invariantly by the ''Lagrange-Charpit equations''<ref>{{harvnb|Delgado|1997}}</ref>
 
:<math>\frac{dx}{a(x,y,z)} = \frac{dy}{b(x,y,z)} = \frac{dz}{c(x,y,z)},</math>
 
or, if a particular parametrization ''t'' of the curves is fixed, then these equations may be written as a system of ordinary differential equations for ''x''(''t''), ''y''(''t''), ''z''(''t''):
 
:<math>
\begin{array}{rcl}
\frac{dx}{dt}&=&a(x,y,z)\\
\frac{dy}{dt}&=&b(x,y,z)\\
\frac{dz}{dt}&=&c(x,y,z).
\end{array}
</math>
 
These are the '''characteristic equations''' for the original system.<!-- [[Characteristic equations]] redirects to this article -->
 
===Linear and quasilinear cases===
Consider now a PDE of the form
 
:<math>\sum_{i=1}^n a_i(x_1,\dots,x_n,u) \frac{\partial u}{\partial x_i}=c(x_1,\dots,x_n,u).</math>
 
For this PDE to be [[linear]], the coefficients ''a''<sub>''i''</sub> may be functions of the spatial variables only, and independent of ''u''.  For it to be [[Differential equations#Types of differential equations|quasilinear]], ''a''<sub>''i''</sub> may also depend on the value of the function, but not on any derivatives.  The distinction between these two cases is inessential for the discussion here.
 
For a linear or quasilinear PDE, the characteristic curves are given parametrically by
 
:<math>(x_1,\dots,x_n,u) = (x_1(s),\dots,x_n(s),u(s))</math>
 
such that the following system of ODEs is satisfied
 
{{NumBlk|:|<math>\frac{dx_i}{ds} = a_i(x_1,\dots,x_n,u)</math>|{{EquationRef|2}}}}
{{NumBlk|:|<math>\frac{du}{ds} = c(x_1,\dots,x_n,u).</math>|{{EquationRef|3}}}}
 
Equations ({{EquationNote|2}}) and ({{EquationNote|3}}) give the characteristics of the PDE.
 
===Fully nonlinear case===
Consider the partial differential equation
 
{{NumBlk|:|<math>F(x_1,\dots,x_n,u,p_1,\dots,p_n)=0</math>|{{EquationRef|4}}}}
 
where the variables ''p''<sub>i</sub> are shorthand for the partial derivatives
 
:<math>p_i = \frac{\partial u}{\partial x_i}.</math>
 
Let (''x''<sub>i</sub>(''s''),''u''(''s''),''p''<sub>i</sub>(''s'')) be a curve in '''R'''<sup>2n+1</sup>.  Suppose that ''u'' is any solution, and that
 
:<math>u(s) = u(x_1(s),\dots,x_n(s)).</math>
 
Along a solution, differentiating ({{EquationNote|4}}) with respect to ''s'' gives
 
:<math>\sum_i(F_{x_i} + F_u p_i)\dot{x}_i + \sum_i F_{p_i}\dot{p}_i = 0</math>
 
:<math>\dot{u} - \sum_i p_i \dot{x}_i = 0</math>
 
:<math>\sum_i (\dot{x}_i dp_i - \dot{p}_i dx_i)= 0.</math>
 
The second equation follows from applying the [[chain rule]] to a solution ''u'', and the third follows by taking an [[exterior derivative]] of the relation <math>du - \sum_i p_i \, dx_i = 0</math>.  Manipulating these equations gives
 
:<math>\dot{x}_i=\lambda F_{p_i},\quad\dot{p}_i=-\lambda(F_{x_i}+F_up_i),\quad \dot{u}=\lambda\sum_i p_iF_{p_i}</math>
 
where λ is a constant.  Writing these equations more symmetrically, one obtains the Lagrange-Charpit equations for the characteristic
 
:<math>\frac{\dot{x}_i}{F_{p_i}}=-\frac{\dot{p}_i}{F_{x_i}+F_up_i}=\frac{\dot{u}}{\sum p_iF_{p_i}}.</math>
 
Geometrically, the method of characteristics in the fully nonlinear case can be interpreted as requiring that the [[Monge cone]] of the differential equation should everywhere be tangent to the graph of the solution.
 
== Example ==
As an example, consider the [[advection equation]] (this example assumes familiarity with PDE notation, and solutions to basic ODEs).
 
:<math>a \frac{\partial u}{\partial x} + \frac{\partial u}{\partial t} = 0\,</math>
 
where <math>a\,</math> is constant and <math>u\,</math> is a function of <math>x\,</math> and <math>t\,</math>. We want to transform this linear first-order PDE into an ODE along the appropriate curve; i.e. something of the form
 
:<math> \frac{d}{ds}u(x(s), t(s)) = F(u, x(s), t(s)) </math>,
 
where <math>(x(s),t(s))\,</math> is a characteristic line. First, we find
 
:<math>\frac{d}{ds}u(x(s), t(s)) = \frac{\partial u}{\partial x} \frac{dx}{ds} + \frac{\partial u}{\partial t} \frac{dt}{ds}</math>
 
by the chain rule.  Now, if we set <math> \frac{dx}{ds} = a</math> and <math>\frac{dt}{ds} = 1</math> we get
 
:<math> a \frac{\partial u}{\partial x} + \frac{\partial u}{\partial t}  \,</math>
 
which is the left hand side of the PDE we started with. Thus
 
:<math>\frac{d}{ds}u = a \frac{\partial u}{\partial x} + \frac{\partial u}{\partial t}  = 0.</math>
 
So, along the characteristic line <math>(x(s), t(s))\,</math>, the original PDE becomes the ODE <math>u_s = F(u, x(s), t(s)) = 0\,</math>. That is to say that along the characteristics, the solution is constant.  Thus, <math>u(x_s, t_s) = u(x_0, 0)\,</math> where <math>(x_s, t_s)\,</math> and <math>(x_0, 0)\,</math> lie on the same characteristic. So to determine the general solution, it is enough to find the characteristics by solving the characteristic system of ODEs:
 
* <math>\frac{dt}{ds} = 1</math>, letting <math>t(0)=0\,</math> we know <math>t=s\,</math>,
* <math>\frac{dx}{ds} = a</math>, letting <math>x(0)=x_0\,</math> we know <math>x=as+x_0=at+x_0\,</math>,
* <math>\frac{du}{ds} = 0</math>, letting <math>u(0)=f(x_0)\,</math> we know <math>u(x(t), t)=f(x_0)=f(x-at)\,</math>.
 
In this case, the characteristic lines are straight lines with slope <math>a\,</math>, and the value of <math>u\,</math> remains constant along any characteristic line.
 
== Characteristics of linear differential operators ==
Let ''X'' be a [[differentiable manifold]] and ''P'' a linear [[differential operator]]
:<math>P : C^\infty(X) \to C^\infty(X)</math>
of order ''k''.  In a local coordinate system ''x''<sup>''i''</sub>,
:<math>P = \sum_{|\alpha|\le k} P^{\alpha}(x)\frac{\partial}{\partial x^\alpha}</math>
in which α denotes a [[multi-index]]. The principal [[Symbol of a differential operator|symbol]] of ''P'', denoted  σ<sub>''P''</sub>, is the function on the [[cotangent bundle]] T<sup>∗</sup>''X'' defined in these local coordinates by
 
:<math>\sigma_P(x,\xi) = \sum_{|\alpha|=k} P^\alpha(x)\xi_\alpha</math>
 
where the ξ<sub>''i''</sub> are the fiber coordinates on the cotangent bundle induced by the coordinate differentials d''x''<sup>''i''</sup>.  Although this is defined using a particular coordinate system, the transformation law relating the ξ<sub>''i''</sub> and the ''x''<sup>''i''</sup> ensures that σ<sub>''P''</sub> is a well-defined function on the cotangent bundle.
 
The function σ<sub>''P''</sub> is [[homogeneous function|homogeneous]] of degree ''k'' in the ξ variable. The zeros of σ<sub>''P''</sub>, away from the zero section of T<sup>∗</sup>''X'', are the characteristics of ''P''.  A hypersurface of ''X'' defined by the equation ''F''(''x'')&nbsp;=&nbsp;''c'' is called a characteristic hypersurface at ''x'' if
:<math>\sigma_P(x,dF(x)) = 0.</math>
Invariantly, a characteristic hypersurface is a hypersurface whose [[conormal bundle]] is in the characteristic set of ''P''.
 
== Qualitative analysis of characteristics ==
Characteristics are also a powerful tool for gaining qualitative insight into a PDE.
 
One can use the crossings of the characteristics to find [[shock wave]]s for potential flow in a compressible fluid. Intuitively, we can think of each characteristic line implying a solution to <math>u\,</math> along itself. Thus, when two characteristics cross, the function becomes multi-valued resulting in a non-physical solution. Physically, this contradiction is removed by the formation of a shock wave, a tangential discontinuity or a weak discontinuity and can result in non-potential flow, violating the initial assumptions.
 
Characteristics may fail to cover part of the domain of the PDE.  This is called a [[rarefaction]], and indicates the solution typically exists only in a weak, i.e. [[integral equation]], sense.
 
The direction of the characteristic lines indicate the flow of values through the solution, as the example above demonstrates.  This kind of knowledge is useful when solving PDEs numerically as it can indicate which [[finite difference]] scheme is best for the problem.
 
== See also ==
* [[Method of quantum characteristics]]
 
==Notes==
<div class="references-small" >
<references />
</div>
 
== References ==
* {{citation|first1=Richard|last1=Courant|authorlink1=Richard Courant|first2=David|last2=Hilbert|authorlink2=David Hilbert|title=Methods of Mathematical Physics, Volume II|publisher=Wiley-Interscience|year=1962}}
*{{citation|jstor=2133111|last=Delgado|first=Manuel|title=The Lagrange-Charpit Method|journal=SIAM Review|volume=39|year=1997|pages=298–304|doi=10.1137/S0036144595293534|issue=2|bibcode = 1997SIAMR..39..298D }}
* {{citation|first=Lawrence C.|last=Evans|title=Partial Differential Equations|publisher=American Mathematical Society|publication-place=Providence|year=1998|isbn=0-8218-0772-2}}
* {{citation|first=Fritz|last=John|authorlink=Fritz John|title=Partial differential equations|publisher=Springer|edition=4th |year=1991|isbn=978-0-387-90609-6}}
* {{citation|first1=A. D.|last1=Polyanin|first2=V. F.|last2=Zaitsev|first3=A.|last3=Moussiaux|title=Handbook of First Order Partial Differential Equations|publisher=Taylor & Francis|publication-place=London|year=2002|isbn=0-415-27267-X}}
* {{citation|first=A. D.|last=Polyanin|title=Handbook of Linear Partial Differential Equations for Engineers and Scientists|publisher=Chapman & Hall/CRC Press|publication-place=Boca Raton|year=2002|isbn=1-58488-299-9}}
* {{citation|last=Sarra|first=Scott|title=The Method of Characteristics with applications to Conservation Laws|journal=Journal of Online Mathematics and its Applications|year=2003}}.
*{{citation|last1=Streeter|first1=VL|last2=Wylie|first2=EB|title=Fluid mechanics|publisher=McGraw-Hill Higher Education|edition=International 9<sup>th</sup> Revised|year=1998}}
 
== External links ==
* [http://www.scottsarra.org/shock/shock.html Prof. Scott Sarra tutorial on Method of Characteristics]
* [http://www-solar.mcs.st-and.ac.uk/~alan/MT2003/PDE/node5.html Prof. Alan Hood tutorial on Method of Characteristics]
 
[[Category:Partial differential equations]]

Revision as of 13:47, 12 August 2013

In mathematics, the method of characteristics is a technique for solving partial differential equations. Typically, it applies to first-order equations, although more generally the method of characteristics is valid for any hyperbolic partial differential equation. The method is to reduce a partial differential equation to a family of ordinary differential equations along which the solution can be integrated from some initial data given on a suitable hypersurface.

Characteristics of first-order partial differential equation

For a first-order PDE (partial differential equations), the method of characteristics discovers curves (called characteristic curves or just characteristics) along which the PDE becomes an ordinary differential equation (ODE). Once the ODE is found, it can be solved along the characteristic curves and transformed into a solution for the original PDE.

For the sake of motivation, we confine our attention to the case of a function of two independent variables x and y for the moment. Consider a quasilinear PDE of the form

Template:NumBlk

Suppose that a solution z is known, and consider the surface graph z = z(x,y) in R3. A normal vector to this surface is given by

(zx(x,y),zy(x,y),1).

As a result,[1] equation (Template:EquationNote) is equivalent to the geometrical statement that the vector field

(a(x,y,z),b(x,y,z),c(x,y,z))

is tangent to the surface z = z(x,y) at every point, for the dot product of this vector field with the above normal vector is zero. In other words, the graph of the solution must be a union of integral curves of this vector field. These integral curves are called the characteristic curves of the original partial differential equation.

The equations of the characteristic curve may be expressed invariantly by the Lagrange-Charpit equations[2]

dxa(x,y,z)=dyb(x,y,z)=dzc(x,y,z),

or, if a particular parametrization t of the curves is fixed, then these equations may be written as a system of ordinary differential equations for x(t), y(t), z(t):

dxdt=a(x,y,z)dydt=b(x,y,z)dzdt=c(x,y,z).

These are the characteristic equations for the original system.

Linear and quasilinear cases

Consider now a PDE of the form

i=1nai(x1,,xn,u)uxi=c(x1,,xn,u).

For this PDE to be linear, the coefficients ai may be functions of the spatial variables only, and independent of u. For it to be quasilinear, ai may also depend on the value of the function, but not on any derivatives. The distinction between these two cases is inessential for the discussion here.

For a linear or quasilinear PDE, the characteristic curves are given parametrically by

(x1,,xn,u)=(x1(s),,xn(s),u(s))

such that the following system of ODEs is satisfied

Template:NumBlk Template:NumBlk

Equations (Template:EquationNote) and (Template:EquationNote) give the characteristics of the PDE.

Fully nonlinear case

Consider the partial differential equation

Template:NumBlk

where the variables pi are shorthand for the partial derivatives

pi=uxi.

Let (xi(s),u(s),pi(s)) be a curve in R2n+1. Suppose that u is any solution, and that

u(s)=u(x1(s),,xn(s)).

Along a solution, differentiating (Template:EquationNote) with respect to s gives

i(Fxi+Fupi)x˙i+iFpip˙i=0
u˙ipix˙i=0
i(x˙idpip˙idxi)=0.

The second equation follows from applying the chain rule to a solution u, and the third follows by taking an exterior derivative of the relation duipidxi=0. Manipulating these equations gives

x˙i=λFpi,p˙i=λ(Fxi+Fupi),u˙=λipiFpi

where λ is a constant. Writing these equations more symmetrically, one obtains the Lagrange-Charpit equations for the characteristic

x˙iFpi=p˙iFxi+Fupi=u˙piFpi.

Geometrically, the method of characteristics in the fully nonlinear case can be interpreted as requiring that the Monge cone of the differential equation should everywhere be tangent to the graph of the solution.

Example

As an example, consider the advection equation (this example assumes familiarity with PDE notation, and solutions to basic ODEs).

aux+ut=0

where a is constant and u is a function of x and t. We want to transform this linear first-order PDE into an ODE along the appropriate curve; i.e. something of the form

ddsu(x(s),t(s))=F(u,x(s),t(s)),

where (x(s),t(s)) is a characteristic line. First, we find

ddsu(x(s),t(s))=uxdxds+utdtds

by the chain rule. Now, if we set dxds=a and dtds=1 we get

aux+ut

which is the left hand side of the PDE we started with. Thus

ddsu=aux+ut=0.

So, along the characteristic line (x(s),t(s)), the original PDE becomes the ODE us=F(u,x(s),t(s))=0. That is to say that along the characteristics, the solution is constant. Thus, u(xs,ts)=u(x0,0) where (xs,ts) and (x0,0) lie on the same characteristic. So to determine the general solution, it is enough to find the characteristics by solving the characteristic system of ODEs:

In this case, the characteristic lines are straight lines with slope a, and the value of u remains constant along any characteristic line.

Characteristics of linear differential operators

Let X be a differentiable manifold and P a linear differential operator

P:C(X)C(X)

of order k. In a local coordinate system xi,

P=|α|kPα(x)xα

in which α denotes a multi-index. The principal symbol of P, denoted σP, is the function on the cotangent bundle TX defined in these local coordinates by

σP(x,ξ)=|α|=kPα(x)ξα

where the ξi are the fiber coordinates on the cotangent bundle induced by the coordinate differentials dxi. Although this is defined using a particular coordinate system, the transformation law relating the ξi and the xi ensures that σP is a well-defined function on the cotangent bundle.

The function σP is homogeneous of degree k in the ξ variable. The zeros of σP, away from the zero section of TX, are the characteristics of P. A hypersurface of X defined by the equation F(x) = c is called a characteristic hypersurface at x if

σP(x,dF(x))=0.

Invariantly, a characteristic hypersurface is a hypersurface whose conormal bundle is in the characteristic set of P.

Qualitative analysis of characteristics

Characteristics are also a powerful tool for gaining qualitative insight into a PDE.

One can use the crossings of the characteristics to find shock waves for potential flow in a compressible fluid. Intuitively, we can think of each characteristic line implying a solution to u along itself. Thus, when two characteristics cross, the function becomes multi-valued resulting in a non-physical solution. Physically, this contradiction is removed by the formation of a shock wave, a tangential discontinuity or a weak discontinuity and can result in non-potential flow, violating the initial assumptions.

Characteristics may fail to cover part of the domain of the PDE. This is called a rarefaction, and indicates the solution typically exists only in a weak, i.e. integral equation, sense.

The direction of the characteristic lines indicate the flow of values through the solution, as the example above demonstrates. This kind of knowledge is useful when solving PDEs numerically as it can indicate which finite difference scheme is best for the problem.

See also

Notes

References

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  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010.
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010

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