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20212024
most citedPositive Modal Logic Beyond Distributivity

7 citations · 8 across the 6 of their papers we have counts for

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6 papers

math.LO2024

Local Tabularity is Decidable for Bi-Intermediate Logics of Trees and of Co-Trees

Miguel Martins, Tommaso Moraschini

A bi-Heyting algebra validates the Gödel-Dummett axiom iff the poset of its prime filters is a disjoint union of co-trees (i.e., order duals of trees). Bi-H…

math.LO2023

Degrees of the finite model property: the antidichotomy theorem

Guram Bezhanishvili, Nick Bezhanishvili, Tommaso Moraschini

A classic result in modal logic, known as the Blok Dichotomy Theorem, states that the degree of incompleteness of a normal extension of the basic modal logic is or $2^{…

math.LO2023

On locally finite varieties of Heyting algebras

M. Martins, T. Moraschini

For every , we construct a variety of Heyting algebras, whose -generated free algebra is finite but whose -generated free algebra is infinite.

math.LO2022★ 1 cited

Bi-intermediate logics of trees and co-trees

N. Bezhanishvili, M. Martins, T. Moraschini

A bi-Heyting algebra validates the Gödel-Dummett axiom iff the poset of its prime filters is a disjoint union of co-trees (i.e., order duals of trees). Bi-H…

math.LO2022★ 7 cited

Positive Modal Logic Beyond Distributivity

Nick Bezhanishvili, Anna Dmitrieva, Jim de Groot +1

We develop a duality for (modal) lattices that need not be distributive, and use it to study positive (modal) logic beyond distributivity, which we call weak positive (modal) logic…

math.LO2021

Profiniteness and representability of spectra of Heyting algebras

G. Bezhanishvili, N. Bezhanishvili, T. Moraschini +1

We prove that there exist profinite Heyting algebras that are not isomorphic to the profinite completion of any Heyting algebra. This resolves an open problem from 2009. More gener…