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Universal Algebra and Computational Complexity Lecture 3

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Theorem (H. Hunt & R. Stearns, ‘90; S. Burris & J. Lawrence, ‘93)<br />

Let R be a finite ring.<br />

If R is nilpotent, then EQUIV -TERM(R) is in P.<br />

Otherwise, EQUIV -TERM(R) is co-NP-complete.<br />

Ross Willard (Waterloo) <strong>Algebra</strong> <strong>and</strong> <strong>Complexity</strong> Třešť, September 2008 26 / 31

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