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<a accesskey="3" href="page.php?w=word_problem_%28mathematics%29&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=computational_mathematics">computational mathematics</a>, a <b>word problem</b> is the <a href="page.php?w=decision_problem">problem of deciding</a> whether two given expressions are equivalent with respect to a set of <a href="page.php?w=rewriting">rewriting</a> identities. A prototypical example is the <a href="page.php?w=word_problem_for_groups">word problem for groups</a>, but there are many other instances as well. Some <a href="page.php?w=deep_result">deep result</a>s of computational theory concern the <a href="page.php?w=undecidable_problem">undecidability</a></p><p>
<a accesskey="3" href="page.php?w=word_problem_%28mathematics%29&amp;p=2">3.Next</a>
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