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has been cited by the following article:

• TITLE: Epimorphisms between Finite 4-Valued Modal Algebras

  AUTHORS: Aldo V. Figallo, Elda Pick, Susana Saad

  KEYWORDS: Four Valued Modal Algebras, Tetravalent Modal Algebras, De Morgan Algebra, Epimorphisms, Automorphisms

  JOURNAL NAME: Advances in Pure Mathematics, Vol.4 No.5, May 16, 2014

  ABSTRACT: In this paper, we determine conditions for the existence of an epimorphism between two finite 4-valued modal algebras and state a method to obtain it. Furthermore, we obtain formulas which generalize those indicated by R. Sikorski for finite Boolean algebras [1] 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003300380037003200340036003100310038000000 , and by M. Abad and A. V. Figallo for finite 3-valued ukasiewicz algebras [2] 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003300380037003200340036003100320031000000 .