= Simplicial sets
{wiki=Category:Simplicial_sets}
Simplicial sets are a concept from algebraic topology and category theory that serve as a combinatorial model for homotopy types. They generalize the notion of simplicial complexes and provide a framework for studying topological spaces through discrete structures. \#\#\# Definition: A simplicial set is a functor from a simplicial category (usually the category of finite ordered sets and order-preserving maps) to the category of sets.
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