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<p>solve the word problem for the fundamental group of the <a href="page.php?w=torus">torus</a>. However this group is the direct product of two infinite cyclic groups and so has a solvable word problem.</p>

<p><big> A more concrete description </big></p>
<p>In more concrete terms, the uniform word problem can be expressed as a <a href="page.php?w=rewriting">rewriting</a> question, for <a href="page.php?w=literal_string">literal string</a>s. For a presentation  of a group ,  will specify a certain number of generators</p>

<p>
:</p>

<p>for . We need to</p><p>
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