6 papers
Modal Measurable Logics via a Modal Loomis-Sikorski Representation Theorem
Nick Bezhanishvili, Jim de Groot, Lawrence S. Moss
We investigate a modal extension of the infinitary classical logic with countable meets and joins, formulated with an eye toward measure-theoretic work in dynamical systems and in…
Blok-Esakia Theorems via Stable Canonical Rules
Nick Bezhanishvili, Antonio Maria Cleani
We present a new uniform method for studying modal companions of superintuitionistic rule systems and related notions, based on the machinery of stable canonical rules. Using this…
A calculus for modal compact Hausdorff spaces
Nick Bezhanishvili, Luca Carai, Silvio Ghilardi +1
The symmetric strict implication calculus is a modal calculus for compact Hausdorff spaces. This is established through de Vries duality, linking compact Hausdorff…
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^{…
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-…
Weak Simplicial Bisimilarity for Polyhedral Models and SLCS_eta -- Extended Version
Nick Bezhanishvili, Vincenzo Ciancia, David Gabelaia +4
In the context of spatial logics and spatial model checking for polyhedral models -- mathematical basis for visualisations in continuous space -- we propose a weakening of simplici…