Abstract
In the first section logics with an algebraic semantics are investigated. Section 2 is devoted to subdirect products of matrices. There, among others we give the matrix counterpart of a theorem of Jónsson from universal algebra. Some positive results concerning logics with, finite degrees of maximality are presented in Section 3.
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Czelakowski, J. Equivalential logics (II). Stud Logica 40, 355–372 (1981). https://doi.org/10.1007/BF00401654
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DOI: https://doi.org/10.1007/BF00401654