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Infinite expression
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, an infinite expression is an <a href="/facts/Expression_(mathematics)/MPrMlYbE">expression</a> in which some <a href="/facts/Operation_(mathematics)/Yplv602Q">operators</a> take an infinite number of <a href="/facts/Argument_of_a_function/QkuPc28I">arguments</a>, or in which the nesting of the operators continues to an infinite depth. A generic concept for infinite expression can lead to ill-defined or self-inconsistent constructions (much like a <a href="/facts/Universal_set/QLFgSfox">set of all sets</a>), but there are several instances of infinite expressions that are well-defined. </p>