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» Epimorphisms in Certain Varieties of Algebras
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13 years 4 months ago
Epimorphisms in Certain Varieties of Algebras
We prove a lemma which, under restrictive conditions, shows that epimorphisms in V are surjective if this is true for epimorphisms from irreducible members of V . This lemma is app...
Gunter Bruns, John Harding
COCOON
2006
Springer
13 years 8 months ago
Varieties Generated by Certain Models of Reversible Finite Automata
Reversible finite automata with halting states (RFA) were first considered by Ambainis and Freivalds to facilitate the research of KondacsWatrous quantum finite automata. In this ...
Marats Golovkins, Jean-Eric Pin
LICS
2006
IEEE
13 years 11 months ago
On Tractability and Congruence Distributivity
Constraint languages that arise from finite algebras have recently been the object of study, especially in connection with the Dichotomy Conjecture of Feder and Vardi. An importa...
Emil W. Kiss, Matthew Valeriote
IGPL
2011
12 years 8 months ago
Generalized ordinal sums and translations
We extend the lattice embedding of the axiomatic extensions of the positive fragment of intuitionistic logic into the axiomatic extensions of intuitionistic logic to the setting of...
Nikolaos Galatos