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Reference.org
Witten zeta function
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, the Witten zeta function, is a function associated to a <a href="/facts/Root_system/TFaEdwMU">root system</a> that encodes the degrees of the <a href="/facts/Irreducible_representation/Hu5geBgk">irreducible representations</a> of the corresponding <a href="/facts/Lie_group/a9jCQyjF">Lie group</a>. These zeta functions were introduced by Don Zagier who named them after <a href="/facts/Edward_Witten/lPUylPmj">Edward Witten's</a> study of their special values (among other things). Note that in, Witten zeta functions do not appear as explicit objects in their own right. </p>