Results 51 to 60 of about 23,472 (227)

Euler semigroup, Hardy-Sobolev and Gagliardo-Nirenberg type inequalities on homogeneous groups [PDF]

open access: yes, 2020
In this paper we describe the Euler semigroup {e−tE∗E}t>0 on homogeneous Lie groups, which allows us to obtain various types of the Hardy-Sobolev and Gagliardo-Nirenberg type inequalities for the Euler operator E.
Yessirkegenov, N   +5 more
core   +1 more source

The adjoint semigroup of a $\Gamma$-semigroup

open access: yesNovi Sad Journal of Mathematics, 2017
Summary: Given a \(\Gamma \)-semigroup \(S\) and a fixed \(\gamma_0 \in \Gamma \), we construct a semigroup \(\Sigma_{\gamma_0}\) in such a way that there is a one to one correspondence between the set of principal one sided ideals (resp. principal quasi-ideals) of \(S\) and their counterparts in \(\Sigma_{\gamma_0}\).
openaire   +2 more sources

Hoare Semigroups [PDF]

open access: yesMathematical Structures in Computer Science, 2017
A semigroup-based setting for developing Hoare logics and refinement calculi is introduced together with procedures for translating between verification and refinement proofs. A new Hoare logic for multirelations and two minimalist generic verification and refinement components, implemented in an interactive theorem prover, are presented as ...
openaire   +3 more sources

A new semigroup technique in poisson approximation [PDF]

open access: yes, 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

Bi-Interior Ideals of Semigroups

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
In this paper, as a further generalization of ideals, we introduce the notion of bi-interior ideal as a generalization of quasi ideal, bi-ideal and interior ideal of semigroup and study the properties of bi-interior ideals of semigroup, simple semigroup ...
Rao M. Murali Krishna
doaj   +1 more source

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati   +2 more
wiley   +1 more source

Finite groups are big as semigroups [PDF]

open access: yes, 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 Left Almost Semigroup [PDF]

open access: yesNeutrosophic Sets and Systems, 2014
In this paper we extend the theory of neutrosophy to study left almost semigroup shortly LAsemigroup. We generalize the concepts of LA-semigroup to form that for neutrosophic LA-semigroup.
Mumtaz Ali   +3 more
doaj  

Chaotic and hypercyclic properties of the quasi-linear Lasota equation

open access: yesOpen Mathematics, 2015
In this paper we describe an explicit solution semigroup of the quasi-linear Lasota equation. By constructing the relationship of this solution semigroup with the translation semigroup we obtain some sufficient and necessary conditions for the solution ...
Hung Cheng-Hung
doaj   +1 more source

Locally adequate semigroup algebras

open access: yesOpen Mathematics, 2016
We build up a multiplicative basis for a locally adequate concordant semigroup algebra by constructing Rukolaĭne idempotents. This allows us to decompose the locally adequate concordant semigroup algebra into a direct product of primitive abundant 0-J*$0{
Ji Yingdan, Luo Yanfeng
doaj   +1 more source

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