Communications in Algebra, Volume 36, Issue 6 (2008)

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Communications in Algebra, Volume 36, Issue 6 (2008)

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Original Articles

Article
Unary Semigroups with an Associate Subgroup
Paula M. Martins & Mario Petrich,*
Pages: 1999-2013
Published online: 12 Jun 2008
AbstractforUnary Semigroups with an Associate Subgroup | Full Text | References | PDF (123.3 KB)
  • 63 Views
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Article
Gorenstein Algebras in Codimension 2 and Koszul Modules
Christian Böhning
Pages: 2014-2022
Published online: 12 Jun 2008
AbstractforGorenstein Algebras in Codimension 2 and Koszul Modules | Full Text | References | PDF (113.8 KB)
  • 51 Views
  • 1 CrossRef citations
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Article
On Surfaces of General Type with pg = q = 1 Isogenous to a Product of Curves
Francesco Polizzi
Pages: 2023-2053
Published online: 12 Jun 2008
AbstractforOn Surfaces of General Type with pg = q = 1 Isogenous to a Product of Curves | Full Text | References | PDF (396.3 KB)
  • 102 Views
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Article
On the Divided Power Algebra and the Symplectic Group in Characteristic 2
Mihalis Maliakas
Pages: 2054-2062
Published online: 12 Jun 2008
AbstractforOn the Divided Power Algebra and the Symplectic Group in Characteristic 2 | Full Text | References | PDF (106.4 KB)
  • 75 Views
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Article
Generalized Derivations with Engel Conditions on One-Sided Ideals
Emine Albaş, Nurcan Argaç & Vincenzo De Filippis
Pages: 2063-2071
Published online: 12 Jun 2008
AbstractforGeneralized Derivations with Engel Conditions on One-Sided Ideals | Full Text | References | PDF (162.2 KB)
  • 216 Views
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Article
Cohen–Macaulay Modules of Infinite Projective Dimension
Agustín Marcelo Vega, César Rodríguez Mielgo & Jaime Muñoz Masqué
Pages: 2072-2078
Published online: 12 Jun 2008
AbstractforCohen–Macaulay Modules of Infinite Projective Dimension | Full Text | References | PDF (89.4 KB)
  • 121 Views
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Article
On a Natural Duality Between Grothendieck Categories
F. Castaño-iglesias
Pages: 2079-2091
Published online: 12 Jun 2008
AbstractforOn a Natural Duality Between Grothendieck Categories | Full Text | References | PDF (144.6 KB)
  • 57 Views
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Article
On Rank 2 Complex Reflection Groups
Pramod N. Achar & Anne-Marie Aubert
Pages: 2092-2132
Published online: 12 Jun 2008
AbstractforOn Rank 2 Complex Reflection Groups | Full Text | References | PDF (326.2 KB)
  • 70 Views
  • 1 CrossRef citations
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Article
Rings with Zassenhaus Families of Ideals
Joshua Buckner & Manfred Dugas
Pages: 2133-2142
Published online: 12 Jun 2008
AbstractforRings with Zassenhaus Families of Ideals | Full Text | References | PDF (122 KB)
  • 54 Views
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Article
Homomorphisms and Congruences of Medial Semigroups with an Associate Subgroup
Paula M. Martins & Mario Petrich
Pages: 2143-2159
Published online: 12 Jun 2008
AbstractforHomomorphisms and Congruences of Medial Semigroups with an Associate Subgroup | Full Text | References | PDF (128.6 KB)
  • 45 Views
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Article
The Group Structure of the Normalizer of Γ0(N) After Atkin–Lehner
Francesc Bars
Pages: 2160-2170
Published online: 12 Jun 2008
AbstractforThe Group Structure of the Normalizer of Γ0(N) After Atkin–Lehner | Full Text | References | PDF (130.6 KB)
  • 146 Views
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Article
On Moduli Spaces for Abelian Categories
Vyacheslav Futorny, Marcos Jardim & Adriano A. Moura
Pages: 2171-2185
Published online: 12 Jun 2008
AbstractforOn Moduli Spaces for Abelian Categories | Full Text | References | PDF (135.9 KB)
  • 115 Views
  • 1 CrossRef citations
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Article
Absolutely Pure Covers
Katherine Pinzon
Pages: 2186-2194
Published online: 12 Jun 2008
AbstractforAbsolutely Pure Covers | Full Text | References | PDF (174.2 KB)
  • 268 Views
  • 36 CrossRef citations
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Article
Finite Generation of the Group of Eigenvalues for Sets of Derivations or Automorphisms of Division Algebras
V. V. Bavula
Pages: 2195-2201
Published online: 12 Jun 2008
AbstractforFinite Generation of the Group of Eigenvalues for Sets of Derivations or Automorphisms of Division Algebras | Full Text | References | PDF (102 KB)
  • 55 Views
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Article
Projective Brauer Theory
Minghui Shen
Pages: 2202-2232
Published online: 12 Jun 2008
AbstractforProjective Brauer Theory | Full Text | References | PDF (269.7 KB)
  • 64 Views
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Article
An Example of Constructing Versal Deformation for Leibniz Algebras
Ashis Mandal
Pages: 2233-2253
Published online: 12 Jun 2008
AbstractforAn Example of Constructing Versal Deformation for Leibniz Algebras | Full Text | References | PDF (183.9 KB)
  • 95 Views
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Article
Power-Substitution and Exchange Rings
Jiaqun Wei
Pages: 2254-2264
Published online: 12 Jun 2008
AbstractforPower-Substitution and Exchange Rings | Full Text | References | PDF (117.3 KB)
  • 46 Views
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Article
Structurable Tori
Bruce Allison, John Faulkner & Yoji Yoshii
Pages: 2265-2332
Published online: 12 Jun 2008
AbstractforStructurable Tori | Full Text | References | PDF (476.9 KB)
  • 84 Views
  • 4 CrossRef citations
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Article
On Normally Embedded Subgroups of Prime Power Order in Finite Groups
Shirong Li & Xuanli He
Pages: 2333-2340
Published online: 12 Jun 2008
AbstractforOn Normally Embedded Subgroups of Prime Power Order in Finite Groups | Full Text | References | PDF (143.9 KB)
  • 130 Views
  • 16 CrossRef citations
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Article
New Braided Crossed Categories and Drinfel'd Quantum Double for Weak Hopf Group Coalgebras
A. Van Daele & Shuanhong Wang
Pages: 2341-2386
Published online: 12 Jun 2008
AbstractforNew Braided Crossed Categories and Drinfel'd Quantum Double for Weak Hopf Group Coalgebras | Full Text | References | PDF (329.7 KB)
  • 118 Views
  • 16 CrossRef citations
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Article
Blattner–Cohen–Montgomery's Duality Theorem for (Weak) Group Smash Products
Bing-Liang Shen & Shuan-Hong Wang
Pages: 2387-2409
Published online: 13 Jun 2008
AbstractforBlattner–Cohen–Montgomery's Duality Theorem for (Weak) Group Smash Products | Full Text | References | PDF (181.4 KB)
  • 84 Views
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Article
Geometry of n × n(n ≥ 3) Hermitian Matrices Over Any Division Ring with an Involution and Its Applications
Li-Ping Huang
Pages: 2410-2438
Published online: 12 Jun 2008
AbstractforGeometry of n × n(n ≥ 3) Hermitian Matrices Over Any Division Ring with an Involution and Its Applications | Full Text | References | PDF (243.9 KB)
  • 71 Views
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