4 papers
Uncountably many conditionally inaccessible decisions exist in every finite probability space
Zalán Gyenis, Miklós Rédei, Leszek Wroński
In a recent paper \cite{Redei-Jing2026} the notion of conditional -inaccessibility of a decision based on utility maximization was defined and examples of conditionally -inac…
More on modal logics and deduction
Zalán Gyenis, Zalán Molnár, Övge Öztürk
We study the relation between additivity and deduction theorems in the algebraic semantics of congruential modal logic. Additivity of the modal operator is well-known to imply the…
Probabilities are always axiomatizable
Zalán Gyenis
In this paper we study the interaction between logic and probability. In particular, we show that the convex hull of evaluations of a broad class of logics is always effectively ax…
Substitutions of variables are finitely axiomatizable over quantifications and permutations
Hajnal Andréka, Zalán Gyenis, István Németi
This paper proves that the equational theory of the class of representable polyadic algebras is finitely axiomatizable over its substitution-free reduct , f…