eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
185
194
510045
On (σ, τ)-module extension Banach algebras
M Fozouni
fozouni@gonbad.ac.ir
1
Department of Mathematics, Gonbad Kavous University, P.O. Box 163, Gonbad-e Kavous, Golestan, Iran.
Let A be a Banach algebra and X be a Banach A-bimodule. In this paper, we dene a new product on A X and generalize the module extension Banach algebras. We obtain characterizations of Arens regularity, commutativity, semisimplity, and study the ideal structure and derivations of this new Banach algebra.
http://jlta.iauctb.ac.ir/article_510045_bfb8f87306cc7d536479e9ca016263f7.pdf
Banach algebra
module extension
Ideal
derivation
Arens regular
eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
196
204
510050
Soft regular generalized b-closed sets in soft topological spaces
S. M. Al-Salem
shuker.alsalem@gmail.com
1
Department of Mathematics, College of Science, Basra, Iraq.
The main purpose of this paper is to introduce and study new classes of soft
closed sets like soft regular generalized b-closed sets in soft topological spaces (brie
y soft
rgb-closed set) Moreover, soft rg-closed, soft gpr-closed, soft gb-closed, soft gsp-closed, soft
g-closed, soft gb-closed, and soft sgb-closed sets in soft topological spaces are introduced in
this paper and we investigate the relations between soft rgb-closed set and the associated soft
sets. Also, the concept of soft semi-regularization of soft topology is introduced and studied
their some properties. We introduce these concepts which are dened over an initial universe
with a xed set of parameters.
http://jlta.iauctb.ac.ir/article_510050_4ac0956f45f51114ac59f26782eb7c83.pdf
Soft set
soft g-closed
soft rg-closed
soft b-closed
eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
205
209
510046
OD-characterization of U_3 (9) and its group of automorphisms
P Nosratpour
p.nosratpour@ilam-iau.ac.ir
1
Department of Mathematics, Ilam Branch, Islamic Azad University, Ilam, Iran.
Let L = U3(9) be the simple projective unitary group in dimension 3 over a eld with 92 elements. In this article, we classify groups with the same order and degree pattern as an almost simple group related to L. Since Aut(L) = Z4 hence almost simple groups related to L are L, L : 2 or L : 4. In fact, we prove that L, L : 2 and L : 4 are OD-characterizable.
http://jlta.iauctb.ac.ir/article_510046_ea08b44affe36d029961b12580fb0be4.pdf
Finite simple group
OD-characterization
group of lie type
eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
211
217
510047
On φ-Connes amenability of dual Banach algebras
A Mahmoodi
a mahmoodi@iauctb.ac.ir
1
Department of Mathematics, Islamic Azad University, Central Tehran Branch, Tehran, Iran.
Let φ be a w
-continuous homomorphism from a dual Banach algebra to C.
The notion of φ-Connes amenability is studied and some characterizations is given. A type
of diagonal for dual Banach algebras is dened. It is proved that the existence of such a
diagonal is equivalent to φ-Connes amenability. It is also shown that φ-Connes amenability
is equivalent to so-called φ-splitting of a certain short exact sequence.
http://jlta.iauctb.ac.ir/article_510047_337587854110ff69f293c30afd82764b.pdf
Dual Banach algebra
φ-Connes amenability
φ-injectivity
eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
219
230
510048
Fixed point theorems for α-ψ-ϕ-contractive integral type mappings
Z Badehian
ziadbadehian@gmail.com
1
M. S. Asgari
msasgari@yahoo.com
2
Department of Mathematics, Islamic Azad University, Central Tehran Branch, PO. Code 13185-768, Tehran, Iran.
Department of Mathematics, Islamic Azad University, Central Tehran Branch, PO. Code 13185-768, Tehran, Iran.
In this paper, we introduce a new concept of - -ϕ-contractive integral type mappings and establish some new xed point theorems in complete metric spaces.
http://jlta.iauctb.ac.ir/article_510048_bf7090acee18525c3ae2e4653f33bf53.pdf
fixed point
α-ψ-ϕ-contractive integral type mapping
complete metric space
eng
Central Tehran Branch. IAU
Journal of Linear and Topological Algebra (JLTA)
2252-0201
2345-5934
2014-12-01
03
04
231
247
510049
Steensen method for solving nonlinear matrix equation X+A^T X^(-1) A=Q
A Nazari
a-nazari@araku.ac.ir
1
Kh Sayehvand
2
M Rostami
3
Department of Mathematics, Arak University, P.O. Box 38156-8-8349, Arak, Iran.
Faculty of Mathematical Sciences, University of Malayer, P. O. Box 16846-13114, Malayer, Iran.
Faculty of Mathematical Sciences, University of Malayer, P. O. Box 16846-13114, Malayer, Iran.
In this article we study Steensen method to solve nonlinear matrix equation
X+A^T X^(-1) A=Q, when A is a normal matrix. We establish some conditions
that generate a sequence of positive denite matrices which converges to solution
of this equation.
http://jlta.iauctb.ac.ir/article_510049_12133f3cde7afd2038f6f49d52566c61.pdf
Fixed point method
Steensen method
Nonlinear matrix equations