Results 11 to 20 of about 11,194,513 (228)

The Hilbert Uniqueness Method for a Class of Integral Operators

open access: yes, 2015
The Hilbert Uniqueness Method introduced by J.-L. Lions in 1988 has great interest among scientists in the control theory, because it is a basic tool to get controllability results for evolutive systems.
SFORZA, Daniela   +3 more
core   +4 more sources

Some inequalities for convex functions of selfadjoint operators in Hilbert spaces [PDF]

open access: yes, 2008
Some inequalities for convex functions of selfadjoint operators in Hilbert spaces under suitable assumptions for the involved operators are given.
Sever S. Dragomir   +2 more
core   +8 more sources

Some Jensen's Type Inequalities for Twice Differentiable Functions of Selfadjoint Operators in Hilbert Spaces [PDF]

open access: yes, 2008
Some Jensen’s type inequalities for twice differentiable functions of selfadjoint operators in Hilbert spaces under suitable assumptions for the involved operators are given.
Dragomir, Sever S
core   +7 more sources

Refinements of the Cauchy-Bunyakovsky-Schwarz Inequality for Functions of Selfadjoint Operators in Hilbert Spaces [PDF]

open access: yes, 2008
Some inequalities for continuous functions of selfadjoint operators in Hilbert spaces that improve the Cauchy-Bunyakovsky-Schwarz inequality, are ...
Dragomir, Sever S
core   +5 more sources

Ternary structures in Hilbert spaces [PDF]

open access: yes, 2011
PhDTernary structures in Hilbert spaces arose in the study of in nite dimensional manifolds in di erential geometry. In this thesis, we develop a structure theory of Hilbert ternary algebras and Jordan Hilbert triples which are Hilbert spaces equipped
Bahmani, Fatemeh
core   +4 more sources

Some Slater's Type Inequalities for Convex Functions of Selfadjoint Operators in Hilbert Spaces [PDF]

open access: yes, 2008
Some inequalities of the Slater type for convex functions of selfadjoint operators in Hilbert spaces under suitable assumptions for the involved operators are given.
Dragomir, Sever S
core   +5 more sources

Some Reverses of the Jensen Inequality for Functions of Selfadjoint Operators in Hilbert Spaces [PDF]

open access: yes, 2008
Some reverses of the Jensen inequality for functions of selfadjoint operators in Hilbert spaces under suitable assumptions for the involved operators are given.
Dragomir, Sever S
core   +6 more sources

Bragg grating based integrated photonic Hilbert transformers

open access: yes, 2013
Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R.   +7 more
core   +2 more sources

Approximate Controllability of a 3D Nonlinear Stochastic Wave Equation

open access: yesJournal of Applied Mathematics, 2014
We study the well-posedness of a 3D nonlinear stochastic wave equation which derives from the Maxwell system by the Galerkin method. Then we study the approximate controllability of this system by the Hilbert uniqueness method.
Peng Gao
doaj   +1 more source

The behavior of solutions of non-linear differential equations in Hilbert space. I

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
This paper deals with the behavior of solutions of ordinary differential equations in a Hilbert Space. Under certain conditions, we obtain lower estimates or upper estimates (or both) for the norm of solutions of two kinds of equations.
Vladimir Schuchman
doaj   +1 more source

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