English

A note on $\varepsilon$-stability

Logic 2024-11-08 v1

Abstract

We study ε\varepsilon-stability in continuous logic. We first consider stability in a model, where we obtain a definability of types result with a better approximation than that in the literature. We also prove forking symmetry for ε\varepsilon-stability and briefly discuss finitely satisfiable types. We then do a short survey of ε\varepsilon-stability in a theory. Finally, we consider the map that takes each formula to its "degree" of stability in a given theory and show that it is a seminorm. All of this is done in the context of a first-order formalism that allows predicates to take values in arbitrary compact metric spaces.

Keywords

Cite

@article{arxiv.2411.04903,
  title  = {A note on $\varepsilon$-stability},
  author = {Nicolas Chavarria},
  journal= {arXiv preprint arXiv:2411.04903},
  year   = {2024}
}

Comments

15 pages

R2 v1 2026-06-28T19:51:53.086Z