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<H1>Kraft's inequality</H1>
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(definition)

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<strong>Definition:</strong>
 <img src="Sigma.gif" tppabs="http://hissa.nist.gov/dads/HTML/Images/Sigma.gif"  border=0 height=10 width=8  alt="summation"><sub>i=1</sub><sup>N</sup> 2<sup>-c(i)</sup>  <img src="leq.gif" tppabs="http://hissa.nist.gov/dads/HTML/Images/leq.gif" border=0 height=7  width=14 alt="less than or equal to"> 1, where N is the number of <a href="leaf.html" tppabs="http://hissa.nist.gov/dads/HTML/leaf.html"><em>leaves</em></a> in a <a href="binarytree.html" tppabs="http://hissa.nist.gov/dads/HTML/binarytree.html"><em>binary tree</em></a> and c(i) is the depth of leaf i.
<P><em>Note:
From Algorithms and Theory of Computation Handbook, page 1-26, Copyright &copy; 1999 by CRC Press LLC.</em>
<P>Author: <a href="terms.html#authorCRC-A" tppabs="http://hissa.nist.gov/dads/terms.html#authorCRC-A">CRC-A</a>

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Entry modified Fri Oct 15 10:25:39 1999.<BR>
HTML page formatted Wed Dec 22 09:35:40 1999.

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