2018-11-17T07:26:05Z
http://jlta.iauctb.ac.ir/?_action=export&rf=summon&issue=110759
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
Upper and lower $alpha(mu_{X},mu_{Y})$-continuous multifunctions
M.
Akdag
F.
Erol
In this paper, a new class of multifunctions, called generalized $alpha(mu_{X},mu_{Y})$-continuous multifunctions, has been dened and studied. Some characterizations and several properties concerning generalized $alpha(mu_{X},mu_{Y})$-continuous multifunctions are obtained. The relationships between generalized $alpha(mu_{X},mu_{Y})$-continuous multifunctions and some known concepts are also discussed.
Generalized open sets
multifunction
generalized continuity
2015
04
01
1
9
http://jlta.iauctb.ac.ir/article_513810_ee0fd50351b16789fd9107c0732b9cab.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
Characterization of $G_2(q)$, where $2 < q equiv 1(mod 3)$ by order components
P.
Nosratpour
In this paper we will prove that the simple group $G_2(q)$, where $2 < q equiv 1(mod3)$ is recognizable by the set of its order components, also other word we prove that if $G$ is a finite group with $OC(G)=OC(G_2(q))$, then $G$ is isomorphic to $G_2(q)$.
prime graph
order component
linear group
2015
04
01
11
23
http://jlta.iauctb.ac.ir/article_513811_9eba341c74bd3045dee87b9bd0cdef4e.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
Frames for compressed sensing using coherence
L.
Gavruta
G.
Zamani Eskandani
P.
Gavruta
We give some new results on sparse signal recovery in the presence of noise, for weighted spaces. Traditionally, were used dictionaries that have the norm equal to 1, but, for random dictionaries this condition is rarely satised. Moreover, we give better estimations then the ones given recently by Cai, Wang and Xu.
coherence
compressed sensing
frames
2015
04
01
25
34
http://jlta.iauctb.ac.ir/article_513812_d615ca1c21b4cd708b5612bb7022dc99.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
The solutions to some operator equations in Hilbert $C^*$-module
M.
Mohammadzadeh Karizaki
M.
Hassani
In this paper, we state some results on product of operators with closed ranges and we solve the operator equation $TXS^*-SX^*T^*= A$ in the general setting of the adjointable operators between Hilbert $C^*$-modules, when $TS = 1$. Furthermore, by using some block operator matrix techniques, we nd explicit solution of the operator equation $TXS^*-SX^*T^*= A$.
Operator equation
Moore-Penrose inverse
Complemented submodule, Closed range, Hilbert C*-module
2015
04
01
35
42
http://jlta.iauctb.ac.ir/article_513813_951b3470a1795ef1334304ce53162f13.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
Numerical solution of Fredholm integral-differential equations on unbounded domain
M.
Matinfar
A.
Riahifar
In this study, a new and efficient approach is presented for numerical solution of Fredholm integro-differential equations (FIDEs) of the second kind on unbounded domain with degenerate kernel based on operational matrices with respect to generalized Laguerre polynomials(GLPs). Properties of these polynomials and operational matrices of integration, differentiation are introduced and are ultilized to reduce the (FIDEs) to the solution of a system of linear algebraic equations with unknown generalized Laguerre coefficients. In addition, two examples are given to demonstrate the validity, efficiency and applicability of the technique.
Fredholm integro-differential equations
unbounded domain
generalized Laguerre polynomials
Operational matrices
2015
04
15
43
52
http://jlta.iauctb.ac.ir/article_513814_a72d44cf0986fe41d522e4eb91500748.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
On duality of modular G-Riesz bases and G-Riesz bases in Hilbert C*-modules
M.
Rashidi-Kouchi
In this paper, we investigate duality of modular g-Riesz bases and g-Riesz bases in Hilbert C*-modules. First we give some characterization of g-Riesz bases in Hilbert C*-modules, by using properties of operator theory. Next, we characterize the duals of a given g-Riesz basis in Hilbert C*-module. In addition, we obtain sufficient and necessary condition for a dual of a g-Riesz basis to be again a g-Riesz basis. We nd a situation for a g-Riesz basis to have unique dual g-Riesz basis. Also, we show that every modular g-Riesz basis is a g-Riesz basis in Hilbert C*-module but the opposite implication is not true.
2015
04
01
53
63
http://jlta.iauctb.ac.ir/article_513815_1265191a1504d3221d0d238b3de41d30.pdf
Journal of Linear and Topological Algebra (JLTA)
J. Linear. Topological. Algebra.
2252-0201
2252-0201
2015
04
01
Fixed Point Theorems for semi $lambda$-subadmissible Contractions in b-Metric spaces
R. J.
Shahkoohi
A.
Razani
Here, a new certain class of contractive mappings in the b-metric spaces is introduced. Some fixed point theorems are proved which generalize and modify the recent results in the literature. As an application, some results in the b-metric spaces endowed with a partial ordered are proved.
fixed point
b-metric
2015
04
13
65
85
http://jlta.iauctb.ac.ir/article_513816_39494436ccf276e6a17420f6d565b1e1.pdf