Results 91 to 100 of about 1,290 (174)
A compact semilattice on the Hilbert cube with no interval homomorphism [PDF]
, 1987 An example for a compact semilattice with no interval homomorphism is given. The underlying space of the semilattice is homeomorphic to the Hilbert cube.
Gerhard Gierz
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On Closedness of Some Homotypical Varieties of Semigroups
Journal of Mathematics, Volume 2024, Issue 1, 2024.It is well known that every subvariety of the variety of semigroups need not be absolutely closed. Thus, identifying those subvarieties that are closed in themselves or in larger varieties is an interesting open problem in the theory of semigroup dominions.
Noor Alam +6 more
wiley +1 more source
Proof Theoretical Studies on Semilattice Relevant Logics [PDF]
, 2001 The semilattice relevant logics ∪ R, ∪ T, ∪ RW, and ∪ TW (slightly different from the orthodox relevant logics R, T, RW, and TW) are defined by “semilattice models ” in which conjunction and disjunction are interpreted in a natural way.
Ryo Kashima
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A semilattice generated by superlow computably enumerable degrees [PDF]
, 2020 We prove that a partially ordered set of all computably enumerable (c. e.) degrees that are the least upper bounds of two superlow c. e. degrees is an upper semilattice not elementary equivalent to the semilattice of all c. e.
Faizrakhmanov M.
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ArchitectureThe Image of Research 2009FinalistMy research identifies a current scape of the contemporary city and then projects a potential design intervention. Contemporary cities implement a series of building extrusions on the grid.
Shader, Nora
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Semilattice of bisimple regular semigroups [PDF]
, 1971 The main purpose of this paper is to show that a regular semigroup S S is a semilattice of bisimple semigroups if and only if it is a band of bisimple semigroups and that this holds if and only if D \mathcal {D}
H. R. Krishna Iyengar
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𝒩-Fuzzy Ideals in Ordered Semigroups
International Journal of Mathematics and Mathematical Sciences, 2009 We introduce the concept of 𝒩-fuzzy left (right) ideals in ordered semigroups and characterize ordered semigroups in terms of 𝒩-fuzzy left (right) ideals. We characterize left regular (right regular) and left simple (right simple) ordered
Asghar Khan +2 more
doaj +1 more source
Semilattices on Peano Continua [PDF]
Proceedings of the American Mathematical Society, 1975 A continuum is cell-cyclic if every cyclic element is an n n -cell for some integer
openaire +1 more source
Injective hulls of certain 𝑆-systems over a semilattice [PDF]
, 1972 We construct, in the category of S-systems over a semilattice, the injective hulls of S-systems which are homomorphic images of S-subsystems of S.
C. S. Johnson, F. R. McMorris
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A CLASSIFICATION OF RATIONAL LANGUAGES BY [PDF]
, 2008 . We prove here an Eilenberg type theorem: the so-called conjunctive varieties of rational languages correspond to the pseudovarieties of finite semilattice-ordered monoids.
Semilattice-ordered Monoids
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