5 citations · 5 across the 9 of their papers we have counts for
10 papers
A Comparison of some Weighted Numerical Radii of Hilbert Space Operators
Maryam Khosravi, Alemeh Sheikhhosseini
In recent years, several generalizations of the numerical radius for bounded linear operators on Hilbert spaces have been introduced and extensively studied. These generalizations…
Some applications of linear algebraic methods in combinatorics
Maryam Khosravi, Ebadollah S. Mahmoodian
In this note, we intend to produce all latin squares from one of them using suitable move which is defined by small trades and do the similar work on 4-cycle systems. These problem…
Some Hadamard product inequalities for accretive matrices
A. Sheikhhosseini, S. Malekinejad, M. Khosravi
In this paper, we obtain some new matrix inequalities involving Hadamard product. Also some Hadamard product inequalities for accretive matrices involving the matrix means, positiv…
Operator mean inequalities for sector matrices
M. Khosravi, A. Sheikhhosseini, S. Malekinejad
In this note, some inequalities involving operator means of sectorial matrices are proved which are generalizations and refinements of previous known results. Among them, let a…
Sharp operator mean inequalities of the numerical radii
Hosna Jafarmanesh, Maryam Khosravi
We present several sharp upper bounds and some extension for product operators. Among other inequalities, it is shown that if , , are non-negative continuous functions on such that…
On refined operator version of Young inequality and its reverse
Alemeh Sheikhhosseini, Maryam Khosravi
In this note, some refinements of Young inequality and its reverse for positive numbers are proved and using these inequalities some operator versions and Hilbert-Schmidt norm vers…
On improvement of Young inequality using the Kontrovich constant
Maryam Khosravi, Alemeh Sheikhhosseini
Some improvements of Young inequality and its reverse for positive numbers with Kontrovich constant are given. Using these inequalities some operator versions and Hilbert-Schmidt n…
Reverse triangle inequality in Hilbert -modules
M. Khosravi, H. Mahyar, M. S. Moslehian
We prove several versions of reverse triangle inequality in Hilbert -modules. We show that if are vectors in a Hilbert module over a -alge…
Bessel type inequalities in Hilbert C*-modules
S. S. Dragomir, M. Khosravi, M. S. Moslehian
Regarding the generalizations of the Bessel inequality in Hilbert spaces which are due to Bombiari and Boas--Bellman, we obtain a version of the Bessel inequality and some generali…
Vanishing of the first -cohomology group of triangular Banach algebras
M. Khosravi, M. S. Moslehian, A. N. Motlagh
In this paper, we define the first topological -cohomology group and examine vanishing of the first -cohomology groups of certain triangular Banach algebras. We apply…