We study many-valued coalgebraic logics with primal algebras of truth-degrees. We describe a way to lift algebraic semantics of classical coalgebraic logics, given by an endofunctor on the variety of Boolean algebras, to this many-valued setting, and we show that many important properties of the original logic are inherited by its lifting. Then, we deal with the problem of obtaining a concrete axiomatic presentation of the variety of algebras for this lifted logic, given that we know one for the original one. We solve this problem for a class of presentations which behaves well with respect to a lattice structure on the algebra of truth-degrees.
@InProceedings{kurz_et_al:LIPIcs.CALCO.2023.17, author = {Kurz, Alexander and Poiger, Wolfgang}, title = {{Many-Valued Coalgebraic Logic: From Boolean Algebras to Primal Varieties}}, booktitle = {10th Conference on Algebra and Coalgebra in Computer Science (CALCO 2023)}, pages = {17:1--17:17}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-287-7}, ISSN = {1868-8969}, year = {2023}, volume = {270}, editor = {Baldan, Paolo and de Paiva, Valeria}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CALCO.2023.17}, URN = {urn:nbn:de:0030-drops-188147}, doi = {10.4230/LIPIcs.CALCO.2023.17}, annote = {Keywords: coalgebraic modal logic, many-valued logic, primal algebras, algebraic semantics, presenting functors} }
Feedback for Dagstuhl Publishing