Results 61 to 70 of about 1,226,242 (181)

Cosine of angle and center of mass of an operator

open access: yes, 2010
We consider the notion of real center of mass and total center of mass of a bounded linear operator relative to another bounded linear operator and explore their relation with cosine and total cosine of a bounded linear operator acting on a complex ...
Das, Gopal, Paul, Kallol
core  

Moment problems for operator polynomials

open access: yes, 2012
We extend Haviland's theorem on the integral representation of positive linear functionals on usual (real multivariate) polynomials to the integral representation of positive linear maps on operator polynomials mapping into the space of operators.
Aljaž Zalar   +29 more
core   +1 more source

Iterative method for solving linear operator equation of the first kind. [PDF]

open access: yesMethodsX, 2023
Noaman SA   +3 more
europepmc   +1 more source

On Robustness in the Gap Metric and Coprime Factor Uncertainty for LTV Systems [PDF]

open access: yes, 2012
In this paper, we study the problem of robust stabilization for linear time-varying (LTV) systems subject to time-varying normalized coprime factor uncertainty.
Djouadi, Seddik M.
core  

Iterative Methods for Computing the Resolvent of Composed Operators in Hilbert Spaces

open access: yesMathematics, 2019
The resolvent is a fundamental concept in studying various operator splitting algorithms. In this paper, we investigate the problem of computing the resolvent of compositions of operators with bounded linear operators.
Yixuan Yang, Yuchao Tang, Chuanxi Zhu
doaj   +1 more source

Adjointability of densely defined closed operators and the Magajna-Schweizer Theorem [PDF]

open access: yes, 2010
In this notes unbounded regular operators on Hilbert $C^*$-modules over arbitrary $C^*$-algebras are discussed. A densely defined operator $t$ possesses an adjoint operator if the graph of $t$ is an orthogonal summand.
Frank, Michael, Sharifi, Kamran
core  

On the conditional distribution of a multivariate Normal given a transformation – the linear case

open access: yesHeliyon, 2019
We show that the orthogonal projection operator onto the range of the adjoint T⁎ of a linear operator T can be represented as UT, where U is an invertible linear operator. Given a Normal random vector Y and a linear operator T, we use this representation
Rajeshwari Majumdar, Suman Majumdar
doaj   +1 more source

Subordination preserving properties associated with a class of operators

open access: yesLe Matematiche, 2013
The purpose of this paper is to find some subordination preserving properties of analytic functions associated with a class of operators with complex parameters.
Poonam Sharma, Ravinder K. Raina
doaj  

TWO METHODS OF DESCRIBING 2-LOCAL DERIVATIONS AND AUTOMORPHISMS

open access: yesUral Mathematical Journal
In the present paper, we investigate 2-local linear operators on vector spaces. Sufficient conditions are obtained for the linearity of a 2-local linear operator on a finite-dimensional vector space. To do this, families of matrices of a certain type are
Farhodjon Arzikulov   +2 more
doaj   +1 more source

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