Proper left type- covers.
Fountain, John, Gomes, Gracinda M.S. (1994)
Portugaliae Mathematica
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Displaying similar documents to “More on graphic toposes”
Proper left type- covers.
Finite commutative monoids of open maps
A. Pultr, J. Sichler (1998)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
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Direct decompositions of dually residuated lattice-ordered monoids
Jiří Rachůnek, Dana Šalounová (2004)
Discussiones Mathematicae - General Algebra and Applications
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The class of dually residuated lattice ordered monoids (DRl-monoids) contains, in an appropriate signature, all l-groups, Brouwerian algebras, MV- and GMV-algebras, BL- and pseudo BL-algebras, etc. In the paper we study direct products and decompositions of DRl-monoids in general and we characterize ideals of DRl-monoids which are direct factors. The results are then applicable to all above mentioned special classes of DRl-monoids.
Dually residuated -monoids having no non-trivial convex subalgebras
Jan Kühr (2006)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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In this note we describe the structure of dually residuated -monoids (-monoids) that have no non-trivial convex subalgebras.
On the monoids of homomorphisms of semigroups with unity
Luděk Kučera (1982)
Commentationes Mathematicae Universitatis Carolinae
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