English

Incompatible category forcing axioms

Logic 2018-05-23 v1

Abstract

Given a cardinal λ\lambda, category forcing axioms for λ\lambda-suitable classes Γ\Gamma are strong forcing axioms which completely decide the theory of the Chang model Cλ\mathcal C_\lambda, modulo generic extensions via forcing notions from Γ\Gamma. MM+++\mathsf{MM}^{+++} was the first category forcing axiom to be isolated (by the second author). In this paper we present, without proofs, a general theory of category forcings, and prove the existence of 1\aleph_1-many pairwise incompatible category forcing axioms for ω1\omega_1-suitable classes.

Keywords

Cite

@article{arxiv.1805.08732,
  title  = {Incompatible category forcing axioms},
  author = {David Aspero and Matteo Viale},
  journal= {arXiv preprint arXiv:1805.08732},
  year   = {2018}
}
R2 v1 2026-06-23T02:04:36.475Z