Zobrazeno 1 - 10
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pro vyhledávání: '"Renshaw, James"'
Autor:
Renshaw, James, Warhurst, William
In 1995 Grillet defined the concept of a stratified semigroup and a stratified semigroup with zero. The present authors extended that idea to include semigroups with a more general base and proved, amongst other things, that finite semigroups in whic
Externí odkaz:
http://arxiv.org/abs/2309.02831
Autor:
Renshaw, James, Warhurst, William
In 1995 Grillet introduced the concept of a stratified semigroup as a kind of generalisation of finite nilsemigroups. We extend these ideas here by allowing a more general Base and describe them in terms of extensions of semigroups by stratified semi
Externí odkaz:
http://arxiv.org/abs/2305.11535
Autor:
Renshaw, James
We consider an application to the discrete log problem using completely regular semigroups which may provide a more secure symmetric cryptosystem than the classic system based on groups. In particular we describe a scheme that would appear to offer p
Externí odkaz:
http://arxiv.org/abs/1802.00042
Autor:
Renshaw, James
We describe the structure of $E-$dense acts over $E-$dense semigroups in an analogous way to that for inverse semigroup acts over inverse semigroups. This is based, to a large extent, on the work of Schein on representations of inverse semigroups by
Externí odkaz:
http://arxiv.org/abs/1712.07426
Akademický článek
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Autor:
Subaiei, Bana Al, Renshaw, James
The study of amalgamation in the category of partially ordered monoids was initiated by Fakhuruddin in the 1980s. In 1986 he proved that, in the category of commutative pomonoids, every absolutely flat commutative pomonoid is a weak amalgmation base
Externí odkaz:
http://arxiv.org/abs/1312.5589
Autor:
Bailey, Alex, Renshaw, James
Recently two different concepts of covers of acts over monoids have been studied. That based on coessential epimorphisms and that based on Enochs' definition of a flat cover of a module over a ring. Two recent papers have suggested that in the former
Externí odkaz:
http://arxiv.org/abs/1310.0742
Autor:
Bailey, Alex, Renshaw, James
The concept of a weak factorization system has been studied extensively in homotopy theory and has recently found an application in one of the proofs of the celebrated flat cover conjecture, categorical versions of which have been presented by a numb
Externí odkaz:
http://arxiv.org/abs/1302.0224