English

Intuitionistic Logic is a Connexive Logic

Logic 2022-09-01 v1

Abstract

We show that intuitionistic logic is deductively equivalent to Connexive Heyting Logic (CHL), hereby introduced as an example of a strong connexive logic with intuitive semantics. We use the reverse algebraisation paradigm: CHL is presented as the assertional logic of a point regular variety (whose structure theory is examined in detail) that turns out to be term equivalent to the variety of Heyting algebras. We provide Hilbert-style and Gentzen-style proof systems for CHL; moreover, we suggest a possible computational interpretation of its connexive conditional, and we revisit Kapsner's idea of superconnexivity.

Keywords

Cite

@article{arxiv.2208.14715,
  title  = {Intuitionistic Logic is a Connexive Logic},
  author = {Davide Fazio and Antonio Ledda and Francesco Paoli},
  journal= {arXiv preprint arXiv:2208.14715},
  year   = {2022}
}

Comments

36 pages, submitted

R2 v1 2026-06-28T00:27:57.477Z