AbstractWe will study antieigenvalues, total antieigenvalues, antieigenvectors, and total antieigenvectors for normal operators. This will generalize the earlier work of the author and Karl Gustafson on normal matrices on finite dimensional spaces. We will also study antieigenvalues and total antieigenvalues of semigroups generated by accretive normal operators
AbstractWe prove that the kernels of the Baskakov–Durrmeyer and the Szász–Mirakjan–Durrmeyer operato...
The Jacobi coefficients c`j (; ) (1 j `, ; > 1) are linked to the Maclaurin spectral expansion of...
Let $$(Lv)(t)=sum^{n} _{i,j=1} (-1)^{j} d_{j} left( s^{2alpha}(t) b_{ij}(t) mu(t) d_{i}v(t)right),$$...
AbstractA series of basic summability results are established for matrices of linear and some nonlin...
AbstractA class of operators is investigated which results from certain boundary and transmission pr...
AbstractWhen A∈B(H) and B∈B(K) are given, we denote by MC the operator acting on the Hilbert space H...
AbstractLet f be a convex function defined on an interval I, 0⩽α⩽1 and A,B n×n complex Hermitian mat...
AbstractIn 2005, Böttcher and Wenzel raised the conjecture that if X,Y are real square matrices, the...
AbstractUpper bounds for the spectral variation of two regular matrix pairs have been given in [Guox...
We consider Jacobi matrices whose essential sectrum is a finite union of closed intervals. We focus ...
In this paper, several direct and inverse theorems are proved concerningthe approximation of one-var...
This paper is devoted to asymptotic estimates for the condition numbers $\kappa(T_n(a))=||T_n(a)|| ...
AbstractWe characterize the bounded linear operators T defined on Banach spaces satisfying a-Browder...
We prove a general operator theoretic result that asserts that many multiplicity two selfadjoint ope...
AbstractThis is a sequel of the article by Borichev, Golinskii and Kupin (2009) [1], where the autho...
AbstractWe prove that the kernels of the Baskakov–Durrmeyer and the Szász–Mirakjan–Durrmeyer operato...
The Jacobi coefficients c`j (; ) (1 j `, ; > 1) are linked to the Maclaurin spectral expansion of...
Let $$(Lv)(t)=sum^{n} _{i,j=1} (-1)^{j} d_{j} left( s^{2alpha}(t) b_{ij}(t) mu(t) d_{i}v(t)right),$$...
AbstractA series of basic summability results are established for matrices of linear and some nonlin...
AbstractA class of operators is investigated which results from certain boundary and transmission pr...
AbstractWhen A∈B(H) and B∈B(K) are given, we denote by MC the operator acting on the Hilbert space H...
AbstractLet f be a convex function defined on an interval I, 0⩽α⩽1 and A,B n×n complex Hermitian mat...
AbstractIn 2005, Böttcher and Wenzel raised the conjecture that if X,Y are real square matrices, the...
AbstractUpper bounds for the spectral variation of two regular matrix pairs have been given in [Guox...
We consider Jacobi matrices whose essential sectrum is a finite union of closed intervals. We focus ...
In this paper, several direct and inverse theorems are proved concerningthe approximation of one-var...
This paper is devoted to asymptotic estimates for the condition numbers $\kappa(T_n(a))=||T_n(a)|| ...
AbstractWe characterize the bounded linear operators T defined on Banach spaces satisfying a-Browder...
We prove a general operator theoretic result that asserts that many multiplicity two selfadjoint ope...
AbstractThis is a sequel of the article by Borichev, Golinskii and Kupin (2009) [1], where the autho...
AbstractWe prove that the kernels of the Baskakov–Durrmeyer and the Szász–Mirakjan–Durrmeyer operato...
The Jacobi coefficients c`j (; ) (1 j `, ; > 1) are linked to the Maclaurin spectral expansion of...
Let $$(Lv)(t)=sum^{n} _{i,j=1} (-1)^{j} d_{j} left( s^{2alpha}(t) b_{ij}(t) mu(t) d_{i}v(t)right),$$...
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