English

Quantum Collections

Operator Algebras 2016-07-20 v2

Abstract

We develop the viewpoint that the opposite of the category of W*-algebras and unital normal *-homomorphisms is analogous to the category of sets and functions. For each pair of W*-algebras, we construct their free exponential, which in the context of this analogy corresponds to the collection of functions from one of these W*-algebras to the other. We also show that every unital normal completely positive map between W*-algebras arises naturally from a normal state on their free exponential.

Keywords

Cite

@article{arxiv.1202.2994,
  title  = {Quantum Collections},
  author = {Andre Kornell},
  journal= {arXiv preprint arXiv:1202.2994},
  year   = {2016}
}

Comments

added an NSF grant number; fixed a typo in the proof of theorem 9.1

R2 v1 2026-06-21T20:19:07.127Z