English

An Infinite Transitivity Theorem

Operator Algebras 2026-01-22 v4

Abstract

In this note, we promote an infinite Kadison transitivity theorem on massive CC^*-algebras, including the Calkin algebra. This transitivity stems from the analog of countable degree-1 saturation on pure states which is inherited from these algebras via excision. We show this saturation to be equivalent to several order-theoretic properties on the quantum filter associated to the state, in particular the property of being a quantum P-point. While we show their existence is independent from ZFC, under basic set theoretic assumptions, we produce a plethora of these states. Finally, we find an irreducible representation of the Calkin algebra which fails infinite transitivity.

Keywords

Cite

@article{arxiv.2512.07549,
  title  = {An Infinite Transitivity Theorem},
  author = {Miles Gould},
  journal= {arXiv preprint arXiv:2512.07549},
  year   = {2026}
}

Comments

15 pages, substantial alterations to section 4, comments welcome

R2 v1 2026-07-01T08:14:51.112Z