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641
Profinite Categories and Semidirect Products
"... After developing a theory of implicit operations and proving an analogue of Reiterman's theorem for categories, this paper addresses two complementary questions for semidirect products and twosided semidirect products of pseudovarieties of semigroups: to determine when a pseudoidentity is vali ..."
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Cited by 35 (17 self)
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After developing a theory of implicit operations and proving an analogue of Reiterman's theorem for categories, this paper addresses two complementary questions for semidirect products and twosided semidirect products of pseudovarieties of semigroups: to determine when a pseudoidentity
On the Hyperdecidability of Semidirect Products of Pseudovarieties
 J. Pure and Applied Algebra
, 1997
"... The notion of hyperdecidability has been introduced as a tool which is particularly suited for granting decidability of semidirect products. It is shown in this paper that the semidirect product of an hyperdecidable pseudovariety with a pseudovariety whose finitely generated free objects are finite ..."
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Cited by 15 (9 self)
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The notion of hyperdecidability has been introduced as a tool which is particularly suited for granting decidability of semidirect products. It is shown in this paper that the semidirect product of an hyperdecidable pseudovariety with a pseudovariety whose finitely generated free objects are finite
Protomodularity, Descent, And Semidirect Products
 THEORY APPL. CATEGORIES
, 1998
"... Using descent theory we give various forms of short fivelemma in protomodular categories, known in the case of exact protomodular categories. We also describe the situation where the notion of a semidirect product can be defined categorically. ..."
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Cited by 30 (5 self)
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Using descent theory we give various forms of short fivelemma in protomodular categories, known in the case of exact protomodular categories. We also describe the situation where the notion of a semidirect product can be defined categorically.
SEMIDIRECT PRODUCTS OF ASSOCIATION SCHEMES
"... Abstract. In his 1996 work developing the theory of association schemes as a ‘generalized ’ group theory, Zieschang introduced the concept of the semidirect product as a possible product operation of certain association schemes. In this paper we extend the semidirect product operation into the ent ..."
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Cited by 2 (0 self)
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Abstract. In his 1996 work developing the theory of association schemes as a ‘generalized ’ group theory, Zieschang introduced the concept of the semidirect product as a possible product operation of certain association schemes. In this paper we extend the semidirect product operation
Semidirect products and the Pukanszky condition
 J. Geom. Phys
, 1998
"... Abstract. We study the general geometrical structure of the coadjoint orbits of a semidirect product formed by a Lie group and a representation of this group on a vector space. The use of symplectic induction methods gives new insight into the structure of these orbits. In fact, each coadjoint orbit ..."
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Cited by 6 (2 self)
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Abstract. We study the general geometrical structure of the coadjoint orbits of a semidirect product formed by a Lie group and a representation of this group on a vector space. The use of symplectic induction methods gives new insight into the structure of these orbits. In fact, each coadjoint
Semidirect products of ordered semigroups
 Communications in Algebra 30
, 2002
"... We introduce semidirect and wreath products of finite ordered semigroups and extend some standard decomposition results to this case. 1 Introduction. All semigroups and monoids considered in this paper are either finite or free. The semidirect product is a powerful tool for studying finite semigroup ..."
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Cited by 14 (8 self)
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We introduce semidirect and wreath products of finite ordered semigroups and extend some standard decomposition results to this case. 1 Introduction. All semigroups and monoids considered in this paper are either finite or free. The semidirect product is a powerful tool for studying finite
Hecke algebras of semidirect products
 PROC. AMER. MATH. SOC
, 2001
"... We consider groupsubgroup pairs in which the group is a semidirect product and the subgroup is contained in the normal part. We give conditions for the pair to be a Hecke pair and we show that the enveloping Hecke algebra and Hecke C ∗algebra are canonically isomorphic to semigroup crossed produ ..."
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Cited by 12 (4 self)
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We consider groupsubgroup pairs in which the group is a semidirect product and the subgroup is contained in the normal part. We give conditions for the pair to be a Hecke pair and we show that the enveloping Hecke algebra and Hecke C ∗algebra are canonically isomorphic to semigroup crossed
Semidirect Products of Regular Semigroups
 Trans. Amer. Math. Soc
, 1999
"... Within the usual semidirect product S T of regular semigroups S and T lies the set Reg (S T ) of its regular elements. Whenever S or T is completely simple, Reg (S T ) is a (regular) subsemigroup. It is this `product' that is the theme of the paper. It is best studied within the framework ..."
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Cited by 4 (4 self)
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Within the usual semidirect product S T of regular semigroups S and T lies the set Reg (S T ) of its regular elements. Whenever S or T is completely simple, Reg (S T ) is a (regular) subsemigroup. It is this `product' that is the theme of the paper. It is best studied within
Presentation of Semidirect Product
"... Copyright c © 2013 N. Hosseinzadeh and H. Doostie. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. By studying the semigroup presente ..."
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presented by π = 〈A,B  An+1 = A,Bm+1 = B,BA = An−1B,Bm = An〉, for every positive integers m,n ≥ 3 we show that, for even values of m this is an appropriate presentation for the semidirect product of monogenic semigroup S = 〈a  an+1 = a 〉 by the monogenic semigroup T = 〈b  bm+1 = b〉. Moreover, for odd
On the second cohomology of semidirect products
, 707
"... Let G be a group which is the semidirect product of a normal subgroup N and a subgroup T, and let M be a Gmodule with not necessarily trivial Gaction. Then we embed the simultaneous restriction map res = (res G N,resG T)t: H 2 (G,M) → H 2 (N,M) T × H 2 (T,M) into a natural five term exact sequenc ..."
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Let G be a group which is the semidirect product of a normal subgroup N and a subgroup T, and let M be a Gmodule with not necessarily trivial Gaction. Then we embed the simultaneous restriction map res = (res G N,resG T)t: H 2 (G,M) → H 2 (N,M) T × H 2 (T,M) into a natural five term exact
Results 1  10
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