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		<title>Quaternion - Revision history</title>
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		<updated>2026-10-24T00:46:08Z</updated>
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	<entry>
		<id>http://wiki.karljones.com/index.php?title=Quaternion&amp;diff=18295&amp;oldid=prev</id>
		<title>Karl Jones: Created page with &quot;In mathematics, the '''quaternions''' are a number system that extends the complex numbers.  == Description ==  They were first described by Irish mathematician William...&quot;</title>
		<link rel="alternate" type="text/html" href="http://wiki.karljones.com/index.php?title=Quaternion&amp;diff=18295&amp;oldid=prev"/>
				<updated>2016-09-13T19:41:06Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;In &lt;a href=&quot;/index.php/Mathematics&quot; title=&quot;Mathematics&quot;&gt;mathematics&lt;/a&gt;, the &amp;#039;&amp;#039;&amp;#039;quaternions&amp;#039;&amp;#039;&amp;#039; are a number system that extends the complex numbers.  == Description ==  They were first described by Irish mathematician William...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;In [[mathematics]], the '''quaternions''' are a number system that extends the complex numbers.&lt;br /&gt;
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== Description ==&lt;br /&gt;
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They were first described by Irish mathematician [[William Rowan Hamilton]] in 1843 and applied to mechanics in [[three-dimensional space]].&lt;br /&gt;
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A feature of quaternions is that multiplication of two quaternions is noncommutative.&lt;br /&gt;
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Hamilton defined a quaternion as the quotient of two directed lines in a three-dimensional space or equivalently as the quotient of two vectors.&lt;br /&gt;
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== See also ==&lt;br /&gt;
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* [[3-sphere]]&lt;br /&gt;
* [[Associative algebra]]&lt;br /&gt;
* [[Biquaternion]]&lt;br /&gt;
* [[Clifford algebra]]&lt;br /&gt;
* [[Complex number]]&lt;br /&gt;
* [[Conversion between quaternions and Euler angles]]&lt;br /&gt;
* [[Division algebra]]&lt;br /&gt;
* [[Dual quaternion]]&lt;br /&gt;
* [[Euler angles]]&lt;br /&gt;
* [[Exterior algebra]]&lt;br /&gt;
* [[Geometric algebra]]&lt;br /&gt;
* [[Hurwitz quaternion]]&lt;br /&gt;
* [[Hurwitz quaternion order]]&lt;br /&gt;
* [[Hyperbolic quaternion]]&lt;br /&gt;
* [[Hypercomplex number]]&lt;br /&gt;
* [[Lénárt sphere]]&lt;br /&gt;
* [[Octonion]]&lt;br /&gt;
* [[Pauli matrices]]&lt;br /&gt;
* [[Quaternion group]]&lt;br /&gt;
* [[Quaternion variable]]&lt;br /&gt;
* [[Quaternionic matrix]]&lt;br /&gt;
* [[Quaternions and spatial rotation]]&lt;br /&gt;
* [[Rotation operator (vector space)]]&lt;br /&gt;
* [[Rotations in 4-dimensional Euclidean space]]&lt;br /&gt;
* [[Slerp]]&lt;br /&gt;
* [[Split-quaternion]]&lt;br /&gt;
* [[Tesseract]]&lt;br /&gt;
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== External links ==&lt;br /&gt;
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* [https://en.wikipedia.org/wiki/Quaternion Quaternion] @ Wikipedia.org &lt;br /&gt;
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[[Category:Mathematics]]&lt;/div&gt;</summary>
		<author><name>Karl Jones</name></author>	</entry>

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