Results 101 to 110 of about 58,101 (201)
On Extending Commutative Semigroups of Isometries [PDF]
Bulletin of the London Mathematical Society, 1969 Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/135310/1/blms0157 ...
openaire +3 more sources
The Bergman property for semigroups [PDF]
, 2009 In this article, we study the Bergman property for semigroups and the associated notions of cofinality and strong cofinality. A large part of the paper is devoted to determining when the Bergman property, and the values of the cofinality and strong ...
Ruskuc, N. +7 more
core +1 more source
H-commutative Delta-semigroups
, 1995 . A \Delta\Gammasemigroup is a semigroup whose lattice of congruences is a chain with respect to inclusion. Schein [9] and Tamura [11] have investigated commutative \Delta\Gammasemigroups, Trotter [13] exponential, Nagy [4] weakly exponential and Bonzini
Reinhard Strecker
core
Quasi-ideal transversals of abundant semigroups and spined products
, 2010 We provide a new and much simpler structure for quasi-ideal adequate transversals of abundant semigroups in terms of spined products, which is similar in nature to that given by Saito for weakly multiplicative inverse transversals of regular semigroups ...
Renshaw, James +3 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2013 通过可换偏序半群的正锥P1、偏序幺子半群P、包含P的子幺半群M和可换偏序半群关于包含偏序幺子半群P的子幺半群的偏序扩张，对可换偏序半群的偏序同态和商序同态的性质进行了刻画，并得到了一些重要结论.
SHAOHai-qin(邵海琴) +3 more
doaj +1 more source
K-Theory for Semigroup C*-Algebras and Partial Crossed Products. [PDF]
Commun Math Phys, 2022 Li X.
europepmc +1 more source
Semigroup Commutators under Differences
Revista Matemática Iberoamericana, 1992 One considers on a domain \(\Omega\) in \(\mathbb{R}^ n\) a self-adjoint second order subelliptic operator with positive characteristic. It can be written \[ Lf= h^{-1} \sum_{i,j} \partial_ i a_{ij} \partial_ j\cdot hf \] with \(h\), \(h^{-1}\), \(a_{ij}\in C^ \infty\) and real, and with the matrix \((a_{ij})\) non-negative.
openaire +2 more sources
On new symbolic key exchange protocols and cryptosystems based on a hidden tame homomorphism
Доповiдi Нацiональної академiї наук УкраїниMultivariate cryptosystems are divided into public rules, for which tools of encryption are open for users and systems of the El Gamal type, for which the encryption function is not given in public, and, for its generation, the opponent has to solve a ...
V.A. Ustimenko
doaj +1 more source
A characterization of Commutative Semigroups
, 2021 This paper deals with some results on commutative semigroups. We consider (s,.) is externally commutative right zero semigroup is regular if it is intra regular and (s,.) is externally commutative semigroup then every inverse semigroup is u ...
et. al., Dr. D. Mrudula Devi
core
Generalized Polynomials on Semigroups
Annales Mathematicae SilesianaeThis 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