Unified correspondence as a proof-theoretic tool

G Greco, M Ma, A Palmigiano… - Journal of Logic and …, 2018 - academic.oup.com
The present article aims at establishing formal connections between correspondence
phenomena, well known from the area of modal logic, and the theory of display calculi …

[HTML][HTML] Algorithmic correspondence and canonicity for non-distributive logics

W Conradie, A Palmigiano - Annals of Pure and Applied Logic, 2019 - Elsevier
We extend the theory of unified correspondence to a broad class of logics with algebraic
semantics given by varieties of normal lattice expansions (LEs), also known as 'lattices with …

Categories: how I learned to stop worrying and love two sorts

W Conradie, S Frittella, A Palmigiano, M Piazzai… - … , and Computation: 23rd …, 2016 - Springer
RS-frames were introduced by Gehrke as relational semantics for substructural logics. They
are two-sorted structures, based on RS-polarities with additional relations used to interpret …

Sahlqvist theory for impossible worlds

A Palmigiano, S Sourabh, Z Zhao - Journal of Logic and …, 2017 - academic.oup.com
We extend unified correspondence theory to Kripke frames with impossible worlds and their
associated regular modal logics. These are logics the modal connectives of which are not …

[PDF][PDF] Constructive canonicity of inductive inequalities

W Conradie, A Palmigiano - Logical Methods in Computer …, 2020 - lmcs.episciences.org
We prove the canonicity of inductive inequalities in a constructive meta-theory, for classes of
logics algebraically captured by varieties of normal and regular lattice expansions. This …

[PDF][PDF] Sahlqvist via translation

W Conradie, A Palmigiano… - Logical Methods in …, 2019 - lmcs.episciences.org
In recent years, unified correspondence has been developed as a generalized Sahlqvist
theory which applies uniformly to all signatures of normal and regular (distributive) lattice …

The logic of resources and capabilities

M Bílková, G Greco, A Palmigiano… - The Review of …, 2018 - cambridge.org
We introduce the logic LRC, designed to describe and reason about agents' abilities and
capabilities in using resources. The proposed framework bridges two—up to now—mutually …

[HTML][HTML] Algebraic modal correspondence: Sahlqvist and beyond

W Conradie, A Palmigiano, S Sourabh - Journal of Logical and Algebraic …, 2017 - Elsevier
The present paper proposes a new introductory treatment of the very well known Sahlqvist
correspondence theory for classical modal logic. The first motivation for the present …

Canonicity and relativized canonicity via pseudo-correspondence: an application of ALBA

W Conradie, A Palmigiano, S Sourabh… - arXiv preprint arXiv …, 2015 - arxiv.org
We generalize Venema's result on the canonicity of the additivity of positive terms, from
classical modal logic to a vast class of logics the algebraic semantics of which is given by …

Lattice logic properly displayed

G Greco, A Palmigiano - … Workshop, WoLLIC 2017, London, UK, July 18 …, 2017 - Springer
We introduce a proper display calculus for (non-distributive) Lattice Logic which is sound,
complete, conservative, and enjoys cut-elimination and subformula property. Properness (ie …