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This article is cited in 8 scientific papers (total in 8 papers)
Axiomatization of Modal Logic Squares with Distinguished Diagonal
S. P. Kikot' M. V. Lomonosov Moscow State University
Abstract:
Modal logics of squared Kripke frames with distinguished diagonal are considered. It is shown that many such logics, unlike ordinary two-dimensional products, cannot be axiomatized by formulas with finitely many variables. The method resembles that used to obtain a similar result for $\ge3$-dimensional products of modal logics. The proof uses, in particular, generalized Sahlquist formulas.
Keywords:
$\delta$-square of a Kripke frame, $\delta$-square of a modal logic, $\delta$-logic of a class of frames, axiomatizability, Kripke frame, Kripke model, variety of a modal logic, modal logic.
Received: 26.01.2009
Citation:
S. P. Kikot', “Axiomatization of Modal Logic Squares with Distinguished Diagonal”, Mat. Zametki, 88:2 (2010), 261–274; Math. Notes, 88:2 (2010), 238–250
Linking options:
https://www.mathnet.ru/eng/mzm8804https://doi.org/10.4213/mzm8804 https://www.mathnet.ru/eng/mzm/v88/i2/p261
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