Results 71 to 80 of about 21,261 (117)
Semitopological homomorphisms [PDF]
, 2008 Inspired by an analogous result of Arnautov about isomorphisms, we prove that all continuous surjective homomorphisms of topological groups f:G->H can be obtained as restrictions of open continuous surjective homomorphisms F:G'->H, where G is a ...
Giordano Bruno, Anna
core +1 more source
Primitive idempotent measures on compact semitopological semigroups [PDF]
Journal of the Australian Mathematical Society, 1972 For a semigroup S let I(S) be the set of idempotents in S. A natural partial order of I(S) is defined by e ≦ f if ef = fe = e. An element e in I(S) is called a primitive idempotent if e is a minimal non-zero element of the partially ordered set (I(S), ≦). It is easy to see that an idempotent e in S is primitive if and only if, for any idempotent f in S,
openaire +1 more source
A new semigroup technique in poisson approximation [PDF]
, 1989 Publisher's, offprint versionWe present a unified and self-contained approach to Poisson approximation problems for independent Bernoulli summands with respect to several metrics by a general semigroup technique, expanding and completing earlier work on ...
Pfeifer, Dietmar +2 more
core +1 more source
Semigroup closures of finite rank symmetric inverse semigroups [PDF]
, 2009 We introduce the notion of semigroup with a tight ideal series and investigate their closures in semitopological semigroups, particularly inverse semigroups with continuous inversion.
Lawson, Jimmie +2 more
core +1 more source
Finite groups are big as semigroups [PDF]
, 2011 We prove that a finite group G occurs as a maximal proper subsemigroup of an infinite semigroup (in the terminology of Freese, Ježek, and Nation, G is a big semigroup) if and only if |G| ≥ 3.
Ruskuc, Nik +3 more
core +1 more source
Neutrosophic LA-Semigroup Rings [PDF]
, 2015 Neutrosophic LA-semigroup is a midway structure between a neutrosophic groupoid and a commutative neutrosophic semigroup. Rings are the old concept in algebraic structures.
Shabir, Muhammad +7 more
core +1 more source
Green index in semigroups : generators, presentations and automatic structures [PDF]
, 2012 The Green index of a subsemigroup T of a semigroup S is given by counting strong orbits in the complement S n T under the natural actions of T on S via right and left multiplication.
Ruskuc, Nik +4 more
core +1 more source
, 1971 This thesis is a study of semitopological groups, a similar but weaker notion than that of topological groups. It is shown that all topological groups are semitopological groups but that the converse is not true.
Scroggs, Jack David
core
Amenability, fixed point properties and Fourier algebras of semitopological semigroups
, 2021 In this thesis, we are interested in the fixed point properties of actions of amenable semitopological semigroups and the Fourier algebra defined on topological groups and semigroups.
, Bui Ngoc Muoi
core
On some generalization of the bicyclic semigroup: the topological version
We show that every Hausdorff Baire topology $tau$ on ${cal C} = langle a,b | a^2b=a, ab^2=b rangle$ such that $({cal C},tau)$ is a semitopological semigroup is discrete and we construct a nondiscrete Hausdorff semigroup topology on ${cal C}$.
Cencelj, Matija +2 more
core +1 more source