Geodesic
Homomorphism kernels of a tetravalent modal algebra
Portugaliae mathematica, Tome 39 (1980) no. 1-4, pp. 371-379.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Keywords: distributive lattice, deductive systems, tetravalent modal algebras 
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     author = {Loureiro, Isabel},
     title = {Homomorphism kernels of a tetravalent modal algebra},
     journal = {Portugaliae mathematica},
     pages = {371--379},
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     volume = {39},
     number = {1-4},
     year = {1980},
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     zbl = {0562.03035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1980__39_1-4_115427/}
}
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Loureiro, Isabel. Homomorphism kernels of a tetravalent modal algebra. Portugaliae mathematica, Tome 39 (1980) no. 1-4, pp. 371-379. http://geodesic.mathdoc.fr/item/PORMA_1980__39_1-4_115427/