An elementary illustrated introduction to simplicial sets
Greg Friedman
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Abstract
This is an expository introduction to simplicial sets and simplicial homotopy theory with particular focus on relating the combinatorial aspects of the theory to their geometric/topological origins. It is intended to be accessible to students familiar with just the fundamentals of algebraic topology.
arXiv comments
Several minor errata corrected since published version. A list of changes is provided at the end of the document