Communications in Algebra, Volume 37, Issue 9 (2009)

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Communications in Algebra, Volume 37, Issue 9 (2009)

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Original Articles

Article
Quotient Rings and f-Radical Extensions of Rings
Chen-Lian Chuang♯, Tsiu-Kwen Lee♯ & Cheng-Kai Liu
Pages: 2933-2944
Published online: 22 Sep 2009
AbstractforQuotient Rings and f-Radical Extensions of Rings | Full Text | References | PDF (131.2 KB)
  • 74 Views
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Article
Reduced Gröbner Bases of Certain Toric Varieties; A New Short Proof
Ibrahim Al-Ayyoub
Pages: 2945-2955
Published online: 22 Sep 2009
AbstractforReduced Gröbner Bases of Certain Toric Varieties; A New Short Proof | Full Text | References | PDF (130.8 KB)
  • 91 Views
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Article
The Augmentation Quotients of the Groups of Order 25, I
Qingxia Zhou & Hong You
Pages: 2956-2977
Published online: 22 Sep 2009
AbstractforThe Augmentation Quotients of the Groups of Order 25, I | Full Text | References | PDF (171.7 KB)
  • 56 Views
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Article
Sums of Element Orders in Finite Groups
Habib Amiri, S. M. Jafarian Amiri & I. M. Isaacs
Pages: 2978-2980
Published online: 22 Sep 2009
AbstractforSums of Element Orders in Finite Groups | Full Text | PDF (66.4 KB)
  • 731 Views
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Article
On the Antipode of a Co-Frobenius (Co)Quasitriangular Hopf Algebra
Margaret Beattie & Daniel Bulacu
Pages: 2981-2993
Published online: 22 Sep 2009
AbstractforOn the Antipode of a Co-Frobenius (Co)Quasitriangular Hopf Algebra | Full Text | References | PDF (130.4 KB)
  • 85 Views
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Article
An Elementary Proof of Grothendieck's Nonvanishing Theorem
Tony J. Puthenpurakal
Pages: 2994-2996
Published online: 22 Sep 2009
AbstractforAn Elementary Proof of Grothendieck's Nonvanishing Theorem | Full Text | References | PDF (64.2 KB)
  • 148 Views
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Article
Almost-Free Finite Covers
Elisabetta Pastori
Pages: 2997-3017
Published online: 22 Sep 2009
AbstractforAlmost-Free Finite Covers | Full Text | References | PDF (179.9 KB)
  • 43 Views
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Article
On v-Domains and Star Operations
D. D. Anderson, David F. Anderson, Marco Fontana & Muhammad Zafrullah
Pages: 3018-3043
Published online: 22 Sep 2009
AbstractforOn v-Domains and Star Operations | Full Text | References | PDF (308.8 KB)
  • 98 Views
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Article
Ratliff–Rush Closure of Ideals in Pullbacks and Polynomial Rings
A. Mimouni
Pages: 3044-3053
Published online: 22 Sep 2009
AbstractforRatliff–Rush Closure of Ideals in Pullbacks and Polynomial Rings | Full Text | References | PDF (111.2 KB)
  • 62 Views
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Article
Gauss Decomposition with Prescribed Semisimple Part in Quadratic Groups
Sheng-Kui Ye, Sheng Chen & Chun-Sheng Wang
Pages: 3054-3063
Published online: 22 Sep 2009
AbstractforGauss Decomposition with Prescribed Semisimple Part in Quadratic Groups | Full Text | References | PDF (115.7 KB)
  • 71 Views
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Article
Generalized Shuffles Related to Nijenhuis and TD-Algebras
Kurusch Ebrahimi-Fard & Philippe Leroux
Pages: 3064-3094
Published online: 22 Sep 2009
AbstractforGeneralized Shuffles Related to Nijenhuis and TD-Algebras | Full Text | References | PDF (273.4 KB)
  • 99 Views
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Article
Tambara Functors on Profinite Groups and Generalized Burnside Functors
Hiroyuki Nakaoka
Pages: 3095-3151
Published online: 22 Sep 2009
AbstractforTambara Functors on Profinite Groups and Generalized Burnside Functors | Full Text | References | PDF (1.6 MB)
  • 123 Views
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Article
Finitistic n-Self-Cotilting Modules
Simion Breaz
Pages: 3152-3170
Published online: 22 Sep 2009
AbstractforFinitistic n-Self-Cotilting Modules | Full Text | References | PDF (269.4 KB)
  • 82 Views
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Article
Constructing Quasitriangular Multiplier Hopf Algebras By Twisted Tensor Coproducts
S. H. Wang, A. Van Daele & Y. H. Zhang
Pages: 3171-3199
Published online: 22 Sep 2009
AbstractforConstructing Quasitriangular Multiplier Hopf Algebras By Twisted Tensor Coproducts | Full Text | References | PDF (197.1 KB)
  • 80 Views
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Article
On Elusive Permutation Groups of Square-Free Degree
Jing Xu
Pages: 3200-3206
Published online: 22 Sep 2009
AbstractforOn Elusive Permutation Groups of Square-Free Degree | Full Text | References | PDF (94.7 KB)
  • 96 Views
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Article
Morita Theory for Comodules Over Corings
Gabriella Böhm & Joost Vercruysse
Pages: 3207-3247
Published online: 22 Sep 2009
AbstractforMorita Theory for Comodules Over Corings | Full Text | References | PDF (729.1 KB)
  • 125 Views
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Article
V-Categories: Applications to Graded Rings
L. Dăuş, C. Năstăsescu & F. Van Oystaeyen
Pages: 3248-3258
Published online: 22 Sep 2009
AbstractforV-Categories: Applications to Graded Rings | Full Text | References | PDF (155.8 KB)
  • 85 Views
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Article
A Class of Gorenstein Artin Algebras of Embedding Dimension Four
Sabine El Khoury & Hema Srinivasan
Pages: 3259-3277
Published online: 22 Sep 2009
AbstractforA Class of Gorenstein Artin Algebras of Embedding Dimension Four | Full Text | References | PDF (160.9 KB)
  • 76 Views
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Article
Semigroup Rings as Weakly Factorial Domains
Gyu Whan Chang
Pages: 3278-3287
Published online: 22 Sep 2009
AbstractforSemigroup Rings as Weakly Factorial Domains | Full Text | References | PDF (116.1 KB)
  • 94 Views
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Article
Some Characterizations of VNL Rings
Harpreet K. Grover & Dinesh Khurana
Pages: 3288-3305
Published online: 22 Sep 2009
AbstractforSome Characterizations of VNL Rings | Full Text | References | PDF (208.2 KB)
  • 132 Views
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Article
A Note on “Conjugacy Classes Outside a Normal Subgroup”
Changguo Shao, Stephen Humphries, Xingzhong You & Jinshan Zhang
Pages: 3306-3308
Published online: 22 Sep 2009
AbstractforA Note on “Conjugacy Classes Outside a Normal Subgroup” | Full Text | References | PDF (66.5 KB)
  • 186 Views
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Article
Characterizations of *-Cancellation Ideals of an Integral Domain
Gyu Whan Chang
Pages: 3309-3320
Published online: 22 Sep 2009
AbstractforCharacterizations of *-Cancellation Ideals of an Integral Domain | Full Text | References | PDF (144.3 KB)
  • 93 Views
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Article
The Structure of Finite c-Local Rings
Qiong Liu & Tongsuo Wu
Pages: 3321-3336
Published online: 22 Sep 2009
AbstractforThe Structure of Finite c-Local Rings | Full Text | References | PDF (148.4 KB)
  • 96 Views
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Article
A Note on Noncancellable Varieties
Robert Dryło
Pages: 3337-3341
Published online: 22 Sep 2009
AbstractforA Note on Noncancellable Varieties | Full Text | References | PDF (97.7 KB)
  • 76 Views
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Article
ℤ2-Codimensions of the Grassmann Algebra
Viviane Ribeiro Tomaz da Silva
Pages: 3342-3359
Published online: 22 Sep 2009
Abstractforℤ2-Codimensions of the Grassmann Algebra | Full Text | References | PDF (159.9 KB)
  • 52 Views
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Article
On Hall Normally Embedded Subgroups of Finite Groups
Shirong Li, Jun He, Guoping Nong & Longqiao Zhou
Pages: 3360-3367
Published online: 22 Sep 2009
AbstractforOn Hall Normally Embedded Subgroups of Finite Groups | Full Text | References | PDF (97.5 KB)
  • 141 Views
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