English

Universal cohomology theories

Algebraic Geometry 2023-05-10 v2 Algebraic Topology Category Theory K-Theory and Homology Representation Theory

Abstract

We furnish any category of a universal (co)homology theory. Universal (co)homologies and universal relative (co)homologies are obtained by showing representability of certain functors and take values in RR-linear abelian categories of motivic nature, where RR is any commutative unitary ring. Universal homology theory on the one point category yields "hieratic" RR-modules, i.e. the indization of Freyd's free abelian category on RR. Grothendieck \partial-functors and satellite functors are recovered as certain additive relative homologies on an abelian category for which we also show the existence of universal ones.

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Cite

@article{arxiv.2105.13286,
  title  = {Universal cohomology theories},
  author = {L. Barbieri-Viale},
  journal= {arXiv preprint arXiv:2105.13286},
  year   = {2023}
}

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R2 v1 2026-06-24T02:32:16.497Z