Stable Canonical Rules for Intuitionistic Modal Logics

Fuente: arXiv
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Autor principal: Liao, Cheng
Formato: Preprint
Publicado: 2026
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author Liao, Cheng
author_facet Liao, Cheng
contents This paper develops stable canonical rules for intuitionistic modal logics, which were first introduced for superintuitionistic logics and transitive nor mal modal logics in [1] and [2] respectively. We first prove that every in tuitionistic modal multi-conclusion consequence relation is axiomatizable by stable canonical rules. This allows us to assume, without loss of generality, that rules considered by us are stable canonical ones. The idea turns out to be useful. In particular, using stable canonical rules, we get an alterna tive proof of the Blok-Esakia theorem for intuitionistic modal logics which was first proved in [3] and generalize it to multi-conclusion consequence re lations. We also prove the Dummett-Lemmon conjecture for intuitionistic modal multi-conclusion consequence relations, which, as far as we know, is a new result.
format Preprint
id arxiv_https___arxiv_org_abs_2602_09344
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Stable Canonical Rules for Intuitionistic Modal Logics
Liao, Cheng
Logic
This paper develops stable canonical rules for intuitionistic modal logics, which were first introduced for superintuitionistic logics and transitive nor mal modal logics in [1] and [2] respectively. We first prove that every in tuitionistic modal multi-conclusion consequence relation is axiomatizable by stable canonical rules. This allows us to assume, without loss of generality, that rules considered by us are stable canonical ones. The idea turns out to be useful. In particular, using stable canonical rules, we get an alterna tive proof of the Blok-Esakia theorem for intuitionistic modal logics which was first proved in [3] and generalize it to multi-conclusion consequence re lations. We also prove the Dummett-Lemmon conjecture for intuitionistic modal multi-conclusion consequence relations, which, as far as we know, is a new result.
title Stable Canonical Rules for Intuitionistic Modal Logics
topic Logic
url https://arxiv.org/abs/2602.09344