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For questions about simplicial sets, simplicial (co)algebras and simplicial objects in other categories; geometric realization, Dold-Kan correspondence, simplicial resolutions etc.

1 vote
1 answer
332 views

The boundary map of Kan simplicial sets

I don't know whether or not the following is a research level question, but since it is concerned with simplicial sets and since they are very popular these days, I think this is the right place to as …
1 vote
0 answers
204 views

Proof for a simplicial morphism

Sorry for the title but I can't come up with another one... ... Suppose X and Y are simplicial sets and $f : X \rightarrow Y$ is a map such that: 1.) f maps dimensions the right way, that is f …