English

A note on some example of NSOP1 theories

Logic 2025-11-03 v7

Abstract

We present here some known and some new examples of non-simple NSOP1 theories and some behaviour that Kim-forking can exhibit in these theories, in particular that Kim-forking after forcing base monotonicity can or can not satisfy extension (on arbitrary sets). This study is based on the results of Chernikov, Ramsey, Dobrowolski and Granger.

Cite

@article{arxiv.2304.05404,
  title  = {A note on some example of NSOP1 theories},
  author = {Yvon Bossut},
  journal= {arXiv preprint arXiv:2304.05404},
  year   = {2025}
}
R2 v1 2026-06-28T10:00:23.100Z