English

Two Dichotomy Theorems

Logic 2017-03-16 v1

Abstract

We introduce the Dichotomy Property, a new property of some languages in Set Computable Theory, in order to explore the expressivity of some languages which are extensions of MLS. By-product we prove undecidability of MLS extended with not ordered cartesian product and disjoint unary union operators.

Keywords

Cite

@article{arxiv.1703.04648,
  title  = {Two Dichotomy Theorems},
  author = {Domenico Cantone and Pietro Ursino},
  journal= {arXiv preprint arXiv:1703.04648},
  year   = {2017}
}
R2 v1 2026-06-22T18:44:57.700Z