[HTML][HTML] On intuitionistic diamonds (and lack thereof)

A Das, S Marin - … Conference on Automated Reasoning with Analytic …, 2023 - Springer
A variety of intuitionistic versions of modal logic have been proposed in the literature. An
apparent misconception is that all these logics coincide on their-only (or-free) fragment …

Intuitionistic G\" odel-L\" ob logic,\a la Simpson: labelled systems and birelational semantics

A Das, I van der Giessen, S Marin - arXiv preprint arXiv:2309.00532, 2023 - arxiv.org
We derive an intuitionistic version of G\" odel-L\" ob modal logic ($\sf {GL} $) in the style of
Simpson, via proof theoretic techniques. We recover a labelled system, $\sf {\ell IGL} $, by …

[HTML][HTML] A new calculus for intuitionistic Strong Löb logic: strong termination and cut-elimination, formalised

I Shillito, I van der Giessen, R Goré… - … Conference on Automated …, 2023 - Springer
We provide a new sequent calculus that enjoys syntactic cut-elimination and strongly
terminating backward proof search for the intuitionistic Strong Löb logic, an intuitionistic …

A natural intuitionistic modal logic: Axiomatization and bi-nested calculus

P Balbiani, H Gao, Ç Gencer, N Olivetti - arXiv preprint arXiv:2309.06309, 2023 - arxiv.org
We introduce FIK, a natural intuitionistic modal logic specified by Kripke models satisfying
the condition of forward confluence. We give a complete Hilbert-style axiomatization of this …

A categorical normalization proof for the modal lambda-calculus

JZS Hu, B Pientka - Electronic Notes in Theoretical …, 2023 - entics.episciences.org
We investigate a simply typed modal λ-calculus, λ^→\square, due to Pfenning, Wong and
Davies, where we define a well-typed term with respect to a context stack that captures the …

Minimal modal logics, constructive modal logics and their relations

T Dalmonte - arXiv preprint arXiv:2309.02367, 2023 - arxiv.org
We present a family of minimal modal logics (namely, modal logics based on minimal
propositional logic) corresponding each to a different classical modal logic. The minimal …

[HTML][HTML] Canonicity of Proofs in Constructive Modal Logic

M Acclavio, D Catta, F Olimpieri - International Conference on Automated …, 2023 - Springer
In this paper we investigate the Curry-Howard correspondence for constructive modal logic
in light of the gap between the proof equivalences enforced by the lambda calculi from the …

[PDF][PDF] Canonicity in Modal Lambda Calculus.

M Acclavio, D Catta, F Olimpieri - arXiv preprint arXiv:2304.05465, 2023 - researchgate.net
In this paper we investigate the Curry-Howard-Lambek correspondence for constructive
modal logic in light of the gap between the proof equivalences enforced by the lambda …

[PDF][PDF] Towards Intuitionistic Gödel-Löb Logic (with a capital 'I')

A Das, I van der Giessen, S Marin - The Proof Society Summer School and … - ub.edu
The field of intuitionistic modal logics studies intuitionistic counterparts of classical modal
logics. Classically, 2 and 3 are dual operators, but this is not necessarily true …

[PDF][PDF] Proof Equivalences in Constructive Modal Logic

M Acclavio, D Catta, F Olimpieri, L Straßburger - The Proof Society Summer School … - ub.edu
Proof theory is the branch of mathematical logic whose aim is studying the properties of
proofs, as well as their structure and invariants. For this purpose, the most used …