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	<title>Parabolic function - Revision history</title>
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	<updated>2026-10-19T16:25:54Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://diffgeom.subwiki.org/w/index.php?title=Parabolic_function&amp;diff=1056&amp;oldid=prev</id>
		<title>Vipul: 1 revision</title>
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		<updated>2008-05-18T19:50:30Z</updated>

		<summary type="html">&lt;p&gt;1 revision&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 19:50, 18 May 2008&lt;/td&gt;
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		<author><name>Vipul</name></author>
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	<entry>
		<id>https://diffgeom.subwiki.org/w/index.php?title=Parabolic_function&amp;diff=1055&amp;oldid=prev</id>
		<title>Vipul at 16:35, 5 April 2007</title>
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		<updated>2007-04-05T16:35:22Z</updated>

		<summary type="html">&lt;p&gt;&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;
Let &amp;lt;math&amp;gt;(m_1,m_2,\ldots,m_r)&amp;lt;/math&amp;gt; be a tuple of integers whose sum is &amp;lt;math&amp;gt;n&amp;lt;/math&amp;gt;. Then, a function &amp;lt;math&amp;gt;f:\R^n \to \R^n&amp;lt;/math&amp;gt; is said to be of parabolic type &amp;lt;math&amp;gt;(m_1,m_2,\ldots,m_r)&amp;lt;/math&amp;gt; if for any &amp;lt;matH&amp;gt;k \le r&amp;lt;/math&amp;gt;, the effect on the first &amp;lt;math&amp;gt;m_1 + m_2 \ldots m_k&amp;lt;/math&amp;gt; coordinates is independent of the values of the remaining coordinates.&lt;br /&gt;
&lt;br /&gt;
If &amp;lt;math&amp;gt;f&amp;lt;/math&amp;gt; is also continuously differentiable, this is equivalent to the condition that the Jacobian matrix of &amp;lt;math&amp;gt;f&amp;lt;/math&amp;gt; be of parabolic type &amp;lt;math&amp;gt;(m_!,m_2,\ldots,m_r)&amp;lt;/math&amp;gt;.&lt;/div&gt;</summary>
		<author><name>Vipul</name></author>
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