Matches in SemOpenAlex for { <https://semopenalex.org/work/W2948247532> ?p ?o ?g. }
- W2948247532 abstract "By slightly adapting two equivalent semantics of noncontingency operator, we obtain two variants, $boxdot$ and $boxplus$, with non-equivalent semantics. We show that on the class of models satisfying any of five basic properties (i.e. seriality, reflexivity, transitivity, symmetry, Euclidicity), the logic $mathcal{L}(boxdot)$, which has $boxdot$ as the sole modal primitive, is less expressive than the logic $mathcal{L}(boxplus)$, which has $boxplus$ as the sole modal primitive. We investigate the frame definability of both languages. We then axiomatize $mathcal{L}(boxplus)$ and $mathcal{L}(boxdot)$ over various classes of bimodal frames. Among other results, a notion of morphisms, called `$boxdot$-morphisms', are provided to show the completeness of axiomatizations of $mathcal{L}(boxdot)$ over serial frames and also over symmetric frames." @default.
- W2948247532 created "2019-06-14" @default.
- W2948247532 creator A5087182382 @default.
- W2948247532 date "2019-06-07" @default.
- W2948247532 modified "2023-09-27" @default.
- W2948247532 title "Two variants of noncontingency operator" @default.
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