Results 31 to 40 of about 14,463 (306)

Some results on S-numerical range of operator matrices

Zanco Journal of Pure and Applied Sciences, 2020
A linear operator on a Hilbert space may be approximated with finite matrices by choosing an orthonormal basis of the Hilbert space. In this paper, we found an approximation of the S-numerical range of bounded and unbounded operator matrices by ...
Berivan Faris Azeez , Ahmed Muhammad
doaj   +3 more sources

Vector inequalities for powers of some operators in Hilbert spaces [PDF]

, 2008
Vector inequalities for powers of some operators in Hilbert spaces with applications for operator norm, numerical radius, commutators and self-commutators are ...
Dragomir, Sever S, S.S. Dragomir
core   +1 more source

Linear Quadratic Optimal Control Problem for Linear Stochastic Generalized System in Hilbert Spaces

Mathematics, 2022
A finite-horizon linear stochastic quadratic optimal control problem is investigated by the GE-evolution operator in the sense of the mild solution in Hilbert spaces.
Zhaoqiang Ge
doaj   +1 more source

Generalized atomic subspaces for operators in Hilbert spaces [PDF]

Mathematica Bohemica, 2022
We introduce the notion of a $g$-atomic subspace for a bounded linear operator and construct several useful resolutions of the identity operator on a Hilbert space using the theory of $g$-fusion frames.
Prasenjit Ghosh, Tapas Kumar Samanta
doaj   +1 more source

On the norm attainment set of a bounded linear operator [PDF]

, 2017
In this paper we explore the properties of a bounded linear operator defined on a Banach space, in light of operator norm attainment. Using Birkhoff-James orthogonality techniques, we give a necessary condition for a nonzero bounded linear operator to ...
Sain, Debmalya
core   +1 more source

Completely bounded linear extensions of operator-valued functions on *-semigroups [PDF]

, 1989
Let G G be a unital ∗ * -semigroup [7, p. 1] in a unital (complex) C ∗ {C^*} -algebra such that the linear span of G G is norm dense in it ...
Ching Yun Suen
core   +1 more source

On the Structure of Certain Bounded Linear Operators [PDF]

Proceedings of the American Mathematical Society, 1975
If every function f f in the range of a bounded linear operator on
openaire   +1 more source

Bounded generalized random linear operators [PDF]

, 2017
In this paper we are concerned with bounded generalized random linear operators. It is shown that each bounded generalized random linear operator can be seen as a set-valued random variable.
Thinh Nguyen
core   +1 more source

Computing the q-Numerical Range of Differential Operators

Journal of Applied Mathematics, 2020
A linear operator on a Hilbert space may be approximated with finite matrices by choosing an orthonormal basis of thez Hilbert space. In this paper, we establish an approximation of the q-numerical range of bounded and unbounnded operator matrices by ...
Ahmed Muhammad, Faiza Abdullah Shareef
doaj   +1 more source

Inequalities for some Functionals Associated with Bounded Linear Operators in Hilbert Spaces [PDF]

, 2006
Some inequalities between the operator norm, numerical radius and functional are established. New upper bounds for the nonnegative quantity that complement some recent results of the author are given as ...
Dragomir, Sever S
core   +1 more source