postscrrspnd.html
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<H1>Post's correspondence problem</H1>
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(classic problem)
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<strong>Definition:</strong>
Given two sets of <a href="string.html" tppabs="http://hissa.nist.gov/dads/HTML/string.html"><em>strings</em></a>, find a sequence of words from the first set and a sequence, of the same length, of words from the second set, such that the concatenation of words in the first sequence is the same string as the concatenation of words in the second sequence. This is an <a href="undecidablpr.html" tppabs="http://hissa.nist.gov/dads/HTML/undecidablpr.html"><em>undecidable problem</em></a>.
<P>Author: <a href="terms.html#authorSKS" tppabs="http://hissa.nist.gov/dads/terms.html#authorSKS">SKS</a>
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Go to the
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home page.
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If you have suggestions, corrections, or comments, please get in touch
with
<a href="javascript:if(confirm('http://hissa.nist.gov/~black/black.html \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://hissa.nist.gov/~black/black.html'" tppabs="http://hissa.nist.gov/~black/black.html">Paul E. Black</a>
(<a href="mailto:paul.black@nist.gov">paul.black@nist.gov</a>).
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Entry modified Sat Sep 4 16:22:17 1999.<BR>
HTML page formatted Wed Dec 22 09:36:12 1999.
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