English

A Geometric Bohr topos

Category Theory 2015-02-09 v1 Operator Algebras

Abstract

In this short note, we construct a variant of the Bohr topos of a C*-algebra which takes into account the topology of the algebra in a finer way and such that this construction is stable under pullback along geometric morphisms. This generalizes a construction for finite dimensional algebras of G.Raynaud. Our idea is to construct the Bohr topos of a C*-algebra A as the sublocale of the lower power locale of the localic completion of A which classifies the commutative localic sub-C*-algebras of A.

Keywords

Cite

@article{arxiv.1502.01896,
  title  = {A Geometric Bohr topos},
  author = {Simon Henry},
  journal= {arXiv preprint arXiv:1502.01896},
  year   = {2015}
}

Comments

9 pages

R2 v1 2026-06-22T08:23:47.321Z