Set::Infinite is a Set Theory module for infinite sets. A set is a collection of objects. The objects that belong to a set are called its members, or "elements". As objects we allow (almost) anything: reals, integers, and objects (such as dates). Note that there is no account for - the order of elements. For example, {1,2} = {2,1}. - repetition of elements. For example, {1,2,2} = {1,1,1,2} = {1,2}.
WWW: http://search.cpan.org/dist/Set-Infinite/
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