Results 131 to 140 of about 141,848 (276)

Semigroup compactifications by generalized distal functions and a fixed point theorem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
The notion of “Semigroup compactification” which is in a sense, a generalization of the classical Bohr (almost periodic) compactification of the usual additive reals R, has been studied by J. F. Berglund et. al. [2].
R. D. Pandian
doaj   +1 more source

Embedding inverse semigroups in coset semigroups

open access: yesSemigroup Forum, 1980
The setK(G) of all cosets X of a group G, modulo all subgroups of G, forms an inverse semigroup under the multiplication X*Y=smallest coset that constains XY. In this note we show that each inverse semigroup S can be embedded in some coset semigroupK(G).
openaire   +3 more sources

The Endomorphism Semigroup of a Special Semigroup

open access: yesJournal of Bangladesh Academy of Sciences, 1970
The endomorphism semigroup for a class of commutative semigroups, called special semigroups, will be studied their structures will be determined in some important cases. AMS Classification : 20 Keywords: Special semigroups, freeness, divisibility, direct sums, endomorphism, endomorphism semigroup.
Mohd Altab Hossain, Subrata Majumdar
openaire   +3 more sources

Semigroup of endomorphisms of a locally compact group [PDF]

open access: bronze, 1958
Morikuni Gotô, Naoki Kimura
openalex   +1 more source

The semigroup of semigroup extensions

open access: yesSemigroup Forum, 1971
J. W. Stepp   +3 more
openaire   +3 more sources

Quasi-Distribution Semigroups and Integrated Semigroups

open access: yesJournal of Functional Analysis, 1997
The author extends the notion of generator of distribution semigroups on Banach spaces to non-densely defined operators. He also introduces a functional calculus for these operators and characterizes integrated semigroups in terms of this functional calculus.
openaire   +2 more sources

Tetrahedral chains and a curious semigroup

open access: yesExtracta Mathematicae, 2019
In 1957 Steinhaus asked for a proof that a chain of identical regular tetrahedra joined face to face cannot be closed. Świerczkowski gave a proof in 1959.
Ian Stewart
doaj  

Generalized Polynomials on Semigroups

open access: yesAnnales Mathematicae Silesianae
This article has two main parts. In the first part we show that some of the basic theory of generalized polynomials on commutative semi-groups can be extended to all semigroups.
Ebanks Bruce
doaj   +1 more source

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