Results 21 to 30 of about 22,482 (118)

A Kallman-Rota Inequality for Evolution Semigroups [PDF]

open access: yes, 2002
A Kallman-Rota type inequality for evolution semigroups and applications for real valued functions are ...
Dragomir, Sever S, Buşe, Constantin
core   +6 more sources

Fixed point properties for semigroups of nonexpansive mappings on convex sets in dual Banach spaces

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018
It has been a long-standing problem posed by the first author in a conference in Marseille in 1990 to characterize semitopological semigroups which have common fixed point property when acting on a nonempty weak* compact convex subset of a dual Banach ...
Anthony To-Ming Lau, Yong Zhang
doaj   +1 more source

Picture N-Sets and Applications in Semigroups

open access: yesInternational Journal of Analysis and Applications, 2022
In this paper, we study picture N-structures and apply it to semigroups. Moreover, we define picture N-ideals in semigroups and investigate several properties of these ideals in semigroups.
Anusorn Simuen   +3 more
doaj   +1 more source

Rough semigroups and rough fuzzy semigroups based on fuzzy ideals

open access: yesOpen Mathematics, 2016
In this paper, we firstly introduce a special congruence relation U(μ, t) induced by a fuzzy ideal μ in a semigroup S. Then we define the lower and upper approximations based on a fuzzy ideal in semigroups. We can establish rough semigroups, rough ideals,
Wang Qiumei, Zhan Jianming
doaj   +1 more source

Flows on Classes of Regular Semigroups and Cauchy Categories

open access: yesJournal of Mathematics, 2019
We consider the structure of the flow monoid for some classes of regular semigroups (which are special case of flows on categories) and for Cauchy categories.
Suha Ahmed Wazzan
doaj   +1 more source

Cayley automaton semigroups [PDF]

open access: yes, 2015
Let S be a semigroup, C(S) the automaton constructed from the right Cayley graph of S with respect to all of S as the generating set and ∑(C(S)) the automaton semigroup constructed from C(S). Such semigroups are termed Cayley automaton semigroups. For
McLeman, Alexander Lewis Andrew
core   +2 more sources

Classification and enumeration of finite semigroups [PDF]

open access: yes, 2010
The classification of finite semigroups is difficult even for small orders because of their large number. Most finite semigroups are nilpotent of nilpotency rank 3.
Distler, Andreas
core   +2 more sources

The Perron Problem for C-Semigroups [PDF]

open access: yes, 2004
<p>Characterizations of Perron-type for the exponential stability of exponentially bounded C-semigroups are given. Also, some applications for the asymptotic behavior of the integrated semigroups are obtained.</p>
Prada, Petre   +2 more
core   +1 more source

Algebras of right ample semigroups

open access: yesOpen Mathematics, 2018
Strict RA semigroups are common generalizations of ample semigroups and inverse semigroups. The aim of this paper is to study algebras of strict RA semigroups.
Guo Junying, Guo Xiaojiang
doaj   +1 more source

On Interval-valued Anti Fuzzy Prime bi-ideal of Semigroup

open access: yesTikrit Journal of Pure Science, 2023
In this paper, we introduce the notions of interval-valued anti fuzzy prime (resp. strongly prime and semiprime) bi-ideals of semigroup. By using these ideas, we characterize those semigroup for which each interval anti-fuzzy bi-ideal is semiprime and ...
S. A. Wuhaib   +2 more
doaj   +1 more source

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