Zalan Gyenis' webpage

▶ For students - course material

▸ 2025/26 Logika WFz.IF-F1-OBL-LO01 (Ćwiczenia)

Handouts:

Resources:

▶ Publications

▸ Books

H. Andréka, Z. Gyenis, I. Németi, and I. Sain, Universal Algebraic Logic, Birkhauser, Studies in Universal Logic series, 2022
L. Csirmaz, Z. Gyenis, Mathematical Logic: Exercises and Solutions, Springer, Problem Books in Mathematics series, 2022

▸ Papers

Submitted

Z. Gyenis, Z. Molnár, Ö. Öztürk, More on modal logics and deduction, Submitted for publication, 2026
Z. Gyenis, On covers of quasivarieties of p-algebras, Submitted for publication, 2026
M.Z. Cocchiaro, Z. Gyenis, L. Wroński, The Equal Weight View without the Principle of Indifference, Submitted, 2026
Z. Gyenis, Two questions of Kowalski--Słomczyńska, Submitted for publication, 2026
Z. Gyenis, M. Łazarz, Z. Molnár, Pseudo-Heyting algebras, Submitted for publication, 2026
Z. Gyenis, Probabilities are always axiomatizable, Submitted for publication, 2025
H. Andréka, Z. Gyenis, and I. Németi, Permutations, substitutions and finite axiomatizability, Submitted for publication, 2025
M. Rédei, Z. Gyenis, On axiomatization and rigor in physics, Submitted, 2026
M. Rédei, Z. Gyenis, Non-transitivity of conditioning is in harmony with epistemic commutativity, Submitted, 2025
L. Wroński, Z. Gyenis, How to serve two epistemic masters, Submitted for publications, 2024

Accepted

Z. Gyenis, and T. Placek, No choice, no history, Forthcoming: Special Issue of Studia Logica in memory of Nuel Belnap (1930-2024), DOI: 10.1007/s11225-025-10216-7, 2026
H. Andréka, Z. Gyenis, and I. Németi, Substitutions of variables are finitely axiomatizable over quantifications and permutations, Forthcoming, 2025
Z. Gyenis, Z. Molnár, Varieties of modal algebras without the congruence extension property, Forthcoming in Notre Dame Journal of Formal Logic
L. Wroński, M. T. Godziszewski, Z. Gyenis, Elimination counterexamples -- a blow to accuracy monism?, (Sage and Wolfram codes: REPOSITORY), Forthcoming in British Journal for Philosophy of Science, 2025

Printed

L. Wroński, Z. Gyenis, M.Z. Cocchiaro, Formal Consistency of the Principal Principle Revisited, European Journal for Philosophy of Science 15, 10, 2025
H. Andréka, Z. Gyenis, I. Németi, and I. Sain, Logic families, Studia Logica, Volume 113, pp. 1567–1613, 2025
Z. Gyenis, Ö. Öztürk, Amalgamation and Robinson property in Universal Algebraic Logic, Logic Journal of IGPL, Volume 32, Issue 1, pp.180–196, 2024
M. Gil Sanchez, Z. Gyenis, L. Wroński, Nonclassical probability, convex hulls and Dutch books, Episteme, Volume 21, Issue 2, pp.498-518, 2024
A. Gopaulsingh, Z. Gyenis, and Ö. Öztürk, Subalgebra independence, Math. Reports, 25(75), Vol. 4, pp. 589-601, 2023
Z. Gyenis, Z. Molnár, Ö. Öztürk, The Modelwise Interpolation Property of Semantic Logics, Bulletin of the Section of Logic 52(1), pp. 59-83, 2023, DOI
M. Gil Sanchez, Z. Gyenis, L. Wroński, Probability and symmetric logic, Journal of Philosophical Logic, Vol. 52, pp.183--198, 2023
L. Wroński, Z. Gyenis, M.Z.Cocchiaro, What Chance-Credence Norms Should Be, Synthese, Vol. 200, Issue 6, 2022
Z. Gyenis, M. Rédei, The Maxim of Probabilism -- with special regard to Reichenbach, Synthese, 199, 8857-8874, 2021
A. Banerjee, Z. Gyenis, Chromatic number of the product of graphs, graph homomorphisms, antichains and cofinal subsets of posets without AC, Commentationes Math. Univ. Carolinae, 62(3), 361-382, 2021
Z. Gyenis, M. Rédei, Having a look at the Bayes Blind Spot, Synthese, 198(4), 3801-3832, 2021
Z. Gyenis, Standard Bayes logic is not finitely axiomatizable, Reviews of Symbolic Logic, 13(2), 326-337, 2020
W. Brown, Z. Gyenis, M. Rédei, The modal logic of Bayesian belief revision, Journal of Philosophical Logic, 48(5), 809-824, 2019
Z. Gyenis, On the modal logic of Jeffrey conditionalization, Logica Universalis, 12(3), 351-374, 2018
Z. Gyenis, Algebraic characterization of the local Craig interpolation property, Bulletin of the Section of Logic, Vol. 47, No. 1, pp. 45--59, 2018
Z. Gyenis, M. Rédei, Categorial subsystem independence as morphism co-possibility, Communications in Mathematical Physics, Vol. 357, Issue 1, pp. 447--465, 2018
Z. Gyenis, Skeleton in the Euclidean closet, Kálmán--Kornai 120 Festschrift, Beáta Gyuris, Katalin Mády, and Gábor Recski (eds.), Research Institute for Linguistics, Hungarian Academy of Sciences, ISBN 978-963-9074-73-6, 2017
Z. Gyenis, M. Rédei, Common cause completability of non-classical probability spaces, Belgrade Philosophical Annual Vol. XXIX, pp. 15-32, 2017
Z. Gyenis, M. Rédei, General properties of Bayesian learning as statistical inference determined by conditional expectations, Reviews of Symbolic Logic, Vol. 10, Issue 4, pp. 719-755, Dec. 2017
Z. Gyenis, M. Rédei, A principled analysis of consistency of an Abstract Principal Principle, in: Making it Formally Explicit, Gábor Hofer-Szabó, Leszek Wroński (eds.), pp. 3-33, Springer, 2017
Z. Gyenis, G. Hofer-Szabó, M. Rédei, Conditioning using conditional expectations: the Borel-Kolmogorov paradox, Synthese, Vol. 194, Issue 7, pp. 2595-2630, 2017, ERRATA!!! by Philipp Wacker
H. Andréka, Z. Gyenis, I. Németi, Ultraproducts of continuous posets, Algebra Universalis, 76:2, 231--235, 2016
Z. Gyenis, M. Rédei, Measure theoretic analysis of consistency of the Principal Principle, Philosophy of Science, Vol. 83, No. 5, pp.972--987, 2016
Z. Gyenis, M. Rédei, Defusing Bertrand's paradox, BJPS, 66(2), 349-373, 2015; doi:10.1093/bjps/axt036
Z. Gyenis, M. Rédei, Why Bertrand's paradox is not paradoxical but is felt so. In: Mäki, U., Votsis, I., Ruphy, S., Schurz, G. (eds) Recent Developments in the Philosophy of Science: EPSA13 Helsinki. European Studies in Philosophy of Science, vol 1. Springer, Cham, 2015
Z. Gyenis, Interpolation property and homogeneous structures, Logic Journal of IGPL, 22(4), 597-607, 2014; doi: 10.1093/jigpal/jzt051
Z. Gyenis, M. Rédei, Atomicity and causal completeness, Erkenntnis 79:3, 437--451, 2014
G. Sági, Z. Gyenis, Upward Morley's Theorem Downward, Math. Log. Quart. 59, No. 4–5, 303–331 (2013) DOI 10.1002/malq.201110048
Z. Gyenis, On atomicity of free algebras of certain cylindric-like varieties, Logic Journal of IGPL 19(1), 44--52, 2011
Z. Gyenis, M. Rédei, Characterizing common cause closed probability spaces, PhilSci, 78:3, 393--409, July 2011
L. E. Szabó, B. Gyenis, Z. Gyenis, M. Rédei, G. Hofer-Szabó, Korrelációk kauzális magyarázata, (in Hungarian) Magyar Filózófiai Szemle, 2010:3

▸ Fun

Z. Gyenis (Polish translation: Błażej Gębura), Czy piraci powodują globalne ocieplenie?, Filozofuj! 2019:3(27)