Results 1  10
of
48
Profinite semigroups, Mal'cev products and identities
 J. ALGEBRA
, 1996
"... We compute a set of identities defining the Mal'cev product of pseudovarieties of finite semigroups or finite ordered semigroups. We also characterize the pointlike subsets of a finite semigroup by means of a relational morphism into a profinite semigroup. Finally, we apply our results to the p ..."
Abstract

Cited by 40 (15 self)
 Add to MetaCart
We compute a set of identities defining the Mal'cev product of pseudovarieties of finite semigroups or finite ordered semigroups. We also characterize the pointlike subsets of a finite semigroup by means of a relational morphism into a profinite semigroup. Finally, we apply our results
ON THE IRREDUCIBILITY OF PSEUDOVARIETIES OF SEMIGROUPS
"... Abstract. We show that, for every pseudovariety of groups H, the pseudovariety ¯ H, consisting of all finite semigroups all of whose subgroups lie in H, is irreducible for join and the Mal’cev and semidirect products. The proof involves a Rees matrix construction which motivates the study of iterate ..."
Abstract
 Add to MetaCart
Abstract. We show that, for every pseudovariety of groups H, the pseudovariety ¯ H, consisting of all finite semigroups all of whose subgroups lie in H, is irreducible for join and the Mal’cev and semidirect products. The proof involves a Rees matrix construction which motivates the study
ON SEMIGROUPS WHOSE IDEMPOTENTGENERATED SUBSEMIGROUP IS APERIODIC
, 2004
"... We show that if S is a finite semigroup with aperiodic idempotentgenerated subsemigroup and H is a pseudovariety of groups, then the sequence of iterated Hkernels of S stops at the idempotentgenerated subsemigroup if and only if each subgroup of S belongs to the wreath product closure of H. Appli ..."
Product Reliability Oriented Design Scheme of Control Chart Based on the Convergent CEV for Censored Characteristics
"... Since the censored characteristics are unmonitored effectively in the manufacturing process, the produced product tends to have an unexpected high infant failure rate. Thus, this paper analyzes the associated relationship between product reliability and censored quality characteristics in manufactu ..."
Abstract
 Add to MetaCart
that the sensitivity of the proposed control chart increased 79.96% compared to traditional CEV chart and is proved to be applicable to monitoring mixed censored characteristics affecting product reliability in manufacturing process.
The formation and function of extracellular enveloped vaccinia virus
 J. Gen
, 2002
"... Vaccinia virus produces four different types of virion from each infected cell called intracellular mature virus (IMV), intracellular enveloped virus (IEV), cellassociated enveloped virus (CEV) and extracellular enveloped virus (EEV). These virions have different abundance, structure, location and ..."
Abstract

Cited by 101 (10 self)
 Add to MetaCart
Vaccinia virus produces four different types of virion from each infected cell called intracellular mature virus (IMV), intracellular enveloped virus (IEV), cellassociated enveloped virus (CEV) and extracellular enveloped virus (EEV). These virions have different abundance, structure, location
Irreducibility of Certain Pseudovarieties
"... We prove that the pseudovarieties of all finite semigroups, and of all aperiodic finite semigroups are irreducible for join, for semidirect product and for Mal'cev product. In particular, these pseudovarieties do not admit maximal proper subpseudovarieties. More generally, analogous results ..."
Abstract

Cited by 11 (1 self)
 Add to MetaCart
We prove that the pseudovarieties of all finite semigroups, and of all aperiodic finite semigroups are irreducible for join, for semidirect product and for Mal'cev product. In particular, these pseudovarieties do not admit maximal proper subpseudovarieties. More generally, analogous results
Abelian Kernels of Some Monoids of Injective Partial Transformations and an Application
, 1999
"... In this paper we compute the abelian kernels of the monoids POI n and POPI n of all injective order preserving and respectively, orientation preserving, partial transformations on a chain with n elements. As an application, we show that the pseudovariety POPI generated by the monoids POPI n (n 2 N ) ..."
Abstract

Cited by 10 (9 self)
 Add to MetaCart
) is not contained in the Mal'cev product of the pseudovariety POI generated by the monoids POI n (n 2 N ) with the pseudovariety Ab of all finite abelian groups.
The word problem in the variety of inverse semigroups with Abelian covers
 J. Lond. Math. Soc. (2
, 1996
"... The variety of inverse semigroups which possess Eunitary covers over Abelian groups coincides with the Mal'cev product of the variety of semilattices and the variety of Abelian groups, and also with the variety generated by semidirect products of semilattices and Abelian groups. We show that t ..."
Abstract

Cited by 5 (0 self)
 Add to MetaCart
The variety of inverse semigroups which possess Eunitary covers over Abelian groups coincides with the Mal'cev product of the variety of semilattices and the variety of Abelian groups, and also with the variety generated by semidirect products of semilattices and Abelian groups. We show
Closed subgroups in proV topologies and the extension problem for inverse automata
 INT. J. ALGEBRA COMPUT
, 1999
"... We relate the problem of computing the closure of a finitely generated subgroup of the free group in the proV topology, where V is a pseudovariety of finite groups, with an extension problem for inverse automata which can be stated as follows: given partial onetoone maps on a finite set, can they ..."
Abstract

Cited by 41 (7 self)
 Add to MetaCart
, and to effectively compute its pronilpotent closure. Finally, we apply our results to a problem in finite monoid theory, the membership problem in pseudovarieties of inverse monoids which are Mal'cev products of semilattices and a pseudovariety of groups.
Results 1  10
of
48