Results 101 to 110 of about 29,782 (219)

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

Modified Whyburn semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Let f:X→Y be a continuous semigroup homomorphism. Conditions are given which will ensure that the semigroup X∪Y is a topological semigroup, when the modified Whyburn topology is placed on X∪Y.
Beth Borel Reynolds, Victor Schneider
doaj   +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

New approach to streaming semigroups with multiplying boundary conditions

open access: yesElectronic Journal of Differential Equations, 2008
This paper concerns the generation of a C_0-semigroup by the streaming operator with general multiplying boundary conditions. A first approach, presented in [2], is based on the Hille-Yosida's Theorem.
Mohamed Boulanouar
doaj  

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