English

Anatomy of $\tilde{\mathbb{E}}$

Logic 2024-02-08 v1

Abstract

We present a detailed general framework to describe the forcing E~\tilde{\mathbb{E}}, defined by Kellner, Shelah and Tan\u{a}sie to prove the consistency with ZFC of an alternative order of Cicho\'n's maximum. Our presentation is close to the framework of tree-creature forcing notions from Horowitz and Shelah. We show that the posets in this class have strong FAM limits for intervals (in recent terminology, they are σ\sigma-FAM-linked) and, furthermore, that they also have strong ultrafilter limits for intervals.

Keywords

Cite

@article{arxiv.2402.04706,
  title  = {Anatomy of $\tilde{\mathbb{E}}$},
  author = {Diego A. Mejía},
  journal= {arXiv preprint arXiv:2402.04706},
  year   = {2024}
}

Comments

To appear in RIMS K\^oky\^uroku, Kyoto University

R2 v1 2026-06-28T14:41:19.644Z