English

Real Hochschild homology as an equivariant Loday construction

Algebraic Topology 2026-03-16 v1

Abstract

Equivariant Loday constructions are a means for providing geometric interpretations of equivariant homology theories. They are usually constructed for a simplicial GG-set and a GG-Tambara functor. We study situations where -- depending on the isotropy subgroups occurring in the simplicial GG-set -- one can work with HH-Tambara functors for a suitable subgroup HH of GG. We apply this to give an interpretation of Real Hochschild homology of discrete EσE_\sigma-rings as equivariant Loday constructions where we consider 2m2m-gons with a geometrically defined action of the dihedral groups D2mD_{2m} for all m1m \geq 1. The action of symmetric groups on 11-skeleta of permutohedra also gives examples with isotropy groups C2C_2.

Keywords

Cite

@article{arxiv.2603.12803,
  title  = {Real Hochschild homology as an equivariant Loday construction},
  author = {Ayelet Lindenstrauss and Birgit Richter and Foling Zou},
  journal= {arXiv preprint arXiv:2603.12803},
  year   = {2026}
}

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