Results 11 to 20 of about 266 (53)

The semaphore codes attached to a Turing machine via resets and their various limits [PDF]

open access: yes, 2016
We introduce semaphore codes associated to a Turing machine via resets. Semaphore codes provide an approximation theory for resets. In this paper we generalize the set-up of our previous paper "Random walks on semaphore codes and delay de Bruijn ...
Rhodes, John   +2 more
core   +3 more sources

In vitro antimicrobial activity of a gel containing antimicrobial peptide AMP2041, chlorhexidine digluconate and Tris‐EDTA on clinical isolates of Pseudomonas aeruginosa from canine otitis

open access: yesVeterinary Dermatology, Volume 27, Issue 5, Page 391-e98, October 2016., 2016
Background– Pseudomonas aeruginosa (PA) may cause suppurative otitis externa with severe inflammation and ulceration in dogs. Multidrug resistance is commonly reported for this organism, creating a difficult therapeutic challenge. Objective– The aim of this study was to evaluate the in vitro antimicrobial activity of a gel containing 0.5 µg/mL of ...
Giovanni Ghibaudo   +6 more
wiley   +1 more source

On the extensions of infinite‐dimensional representations of Lie semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 4, Page 195-207, 2002., 2002
The necessary and sufficient conditions have been obtained for extendability of a Banach representation of a generating Lie semigroup S to a local representation of the Lie group G generated by S when the tangent wedge of S is a Lie semialgebra. The most convenient conditions we obtain correspond to the case of unitary representations. In this case, we
Adolf R. Mirotin
wiley   +1 more source

Reachability problems for products of matrices in semirings [PDF]

open access: yes, 2002
We consider the following matrix reachability problem: given $r$ square matrices with entries in a semiring, is there a product of these matrices which attains a prescribed matrix? We define similarly the vector (resp.
Baccelli F.   +11 more
core   +5 more sources

On completely 0‐simple semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 19, Issue 3, Page 507-520, 1996., 1995
Let S be a completely 0‐simple semigroup and F be an algebraically closed field. Then for each 0‐minimal right ideal M of S, M = B ∪ C ∪ {0}, where B is a right group and C is a zero semigroup. Also, a matrix representation for S other than Rees matrix is found for the condition that the semigroup ring R(F, S) is semisimple Artinian.
Yue-Chan Phoebe Ho
wiley   +1 more source

Free monoids are coherent [PDF]

open access: yes, 2015
A monoid S is said to be right coherent if every finitely generated subact of every finitely presented right S-act is finitely presented. Left coherency is defined dually and S is coherent if it is both right and left coherent.
Gould, Victoria   +2 more
core   +2 more sources

Isomorphisms of semigroups of transformations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 6, Issue 3, Page 487-501, 1983., 1981
If M is a centered operand over a semigroup S, the suboperands of M containing zero are characterized in terms of S‐homomorphisms of M. Some properties of centered operands over a semigroup with zero are studied. A Δ‐centralizer C of a set M and the semigroup S(C, Δ) of transformations of M over C are introduced, where Δ is a subset of M. When Δ = M, M
A. Sita Rama Murti
wiley   +1 more source

An investigation on hyper S-posets over ordered semihypergroups

open access: yesOpen Mathematics, 2017
In this paper, we define and study the hyper S-posets over an ordered semihypergroup in detail. We introduce the hyper version of a pseudoorder in a hyper S-poset, and give some related properties.
Tang Jian, Davvaz Bijan, Xie Xiang-Yun
doaj   +1 more source

Combinatorial Markov chains on linear extensions [PDF]

open access: yes, 2013
We consider generalizations of Schuetzenberger's promotion operator on the set L of linear extensions of a finite poset of size n. This gives rise to a strongly connected graph on L.
A. Björner   +33 more
core   +2 more sources

On categorical aspects of S -quantales

open access: yesOpen Mathematics, 2018
S-quantales are characterized as injective objects in the category of S-posets with respect to certain class of homomorphisms that are order-preserving mappings. This paper is devoted to exhibitions of categorical structures on S-quantales.
Zhang Xia, Zhou Yunyan
doaj   +1 more source

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