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	<title>formulasearchengine - User contributions [en]</title>
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	<updated>2026-08-12T06:17:23Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://en.formulasearchengine.com/w/index.php?title=Money_multiplier&amp;diff=237503</id>
		<title>Money multiplier</title>
		<link rel="alternate" type="text/html" href="https://en.formulasearchengine.com/w/index.php?title=Money_multiplier&amp;diff=237503"/>
		<updated>2014-02-28T13:00:18Z</updated>

		<summary type="html">&lt;p&gt;92.22.14.91: /* Alternative perspectives */ Added tags to link authors&amp;#039; names to their Wikipedia pages.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;The title of the writer is Luther. Meter studying is where my main income comes from but quickly I&#039;ll be on my own. I currently live in Arizona but now I&#039;m contemplating other options. The favorite hobby for him and his children is to drive and now he is trying to make cash with it.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Feel free to visit my weblog [http://Ipstube.Ips.k12.in.us/users/GPGK http://Ipstube.Ips.k12.in.us]&lt;/div&gt;</summary>
		<author><name>92.22.14.91</name></author>
	</entry>
	<entry>
		<id>https://en.formulasearchengine.com/w/index.php?title=Pi_(letter)&amp;diff=2550</id>
		<title>Pi (letter)</title>
		<link rel="alternate" type="text/html" href="https://en.formulasearchengine.com/w/index.php?title=Pi_(letter)&amp;diff=2550"/>
		<updated>2013-11-23T11:58:59Z</updated>

		<summary type="html">&lt;p&gt;92.22.181.225: /* Variant pi */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;A simple mathematical representation of [[Brownian motion]], the &#039;&#039;&#039;Wiener equation&#039;&#039;&#039;, named after [[Norbert Wiener]], assumes the current [[velocity]] of a [[fluid]] particle fluctuates [[random]]ly:&lt;br /&gt;
&lt;br /&gt;
:&amp;lt;math&amp;gt;\mathbf{v} = \frac{d\mathbf{x}}{dt} = g(t),&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
where &#039;&#039;&#039;v&#039;&#039;&#039; is [[velocity]], &#039;&#039;&#039;x&#039;&#039;&#039; is position, &#039;&#039;d/dt&#039;&#039; is the time [[derivative]], and &#039;&#039;g(t)&#039;&#039; may for instance be [[white noise]].&lt;br /&gt;
&lt;br /&gt;
Since velocity changes instantly in this formalism, the &#039;&#039;Wiener equation&#039;&#039; is not suitable for short time scales.  In those cases, the [[Langevin equation]], which looks at particle [[acceleration]], must be used.&lt;br /&gt;
&lt;br /&gt;
{{noreferences|date=January 2012}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Stochastic differential equations]]&lt;br /&gt;
&lt;br /&gt;
{{probability-stub}}&lt;/div&gt;</summary>
		<author><name>92.22.181.225</name></author>
	</entry>
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