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	<title>Signum vector function - Revision history</title>
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	<updated>2026-04-29T23:37:13Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://calculus.subwiki.org/w/index.php?title=Signum_vector_function&amp;diff=2712&amp;oldid=prev</id>
		<title>Vipul: Created page with &quot;==Definition==  Suppose &lt;math&gt;n&lt;/math&gt; is a positive integer. The &#039;&#039;&#039;signum vector function&#039;&#039;&#039; is a function &lt;math&gt;\R^n \to \R^n&lt;/math&gt; whose behavior in each coordinate is as...&quot;</title>
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		<updated>2014-05-11T18:34:35Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;==Definition==  Suppose &amp;lt;math&amp;gt;n&amp;lt;/math&amp;gt; is a positive integer. The &amp;#039;&amp;#039;&amp;#039;signum vector function&amp;#039;&amp;#039;&amp;#039; is a function &amp;lt;math&amp;gt;\R^n \to \R^n&amp;lt;/math&amp;gt; whose behavior in each coordinate is as...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Definition==&lt;br /&gt;
&lt;br /&gt;
Suppose &amp;lt;math&amp;gt;n&amp;lt;/math&amp;gt; is a positive integer. The &amp;#039;&amp;#039;&amp;#039;signum vector function&amp;#039;&amp;#039;&amp;#039; is a function &amp;lt;math&amp;gt;\R^n \to \R^n&amp;lt;/math&amp;gt; whose behavior in each coordinate is as per the signum function. Explicitly, it is defined as the function:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;(x_1,x_2,\dots,x_n) \mapsto (\operatorname{sgn}(x_1),\operatorname{sgn}(x_2),\dots,\operatorname{sgn}(x_n))&amp;lt;/math&amp;gt;&lt;/div&gt;</summary>
		<author><name>Vipul</name></author>
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