English

Effective homology for homotopy colimit and cofibrant replacement

Algebraic Topology 2019-06-04 v1

Abstract

We extend the notion of simplicial set with effective homology to diagrams of simplicial sets. Further, for a given finite diagram of simplicial sets X ⁣:IsSetX \colon \mathcal{I} \to \mathsf{sSet} such that each simplicial set X(i)X(i) has effective homology, we present an algorithm computing the homotopy colimit hocolimX\mathsf{hocolim} X as a simplicial set with effective homology. We also give an algorithm computing the cofibrant replacement XcofX^\mathsf{cof} of XX as a diagram with effective homology. This is applied to computing of equivariant cohomology operations.

Keywords

Cite

@article{arxiv.1410.3396,
  title  = {Effective homology for homotopy colimit and cofibrant replacement},
  author = {Marek Filakovský},
  journal= {arXiv preprint arXiv:1410.3396},
  year   = {2019}
}