Results 41 to 50 of about 349,949 (184)

Cancellability and Regularity of Operator Connections [PDF]

, 2014
An operator connection is a binary operation assigned to each pair of positive operators satisfying monotonicity, continuity from above and the transformer inequality.
Chansangiam, Pattrawut
core  

A note on twisted Dirac operators on closed surfaces

, 2018
We derive an inequality that relates nodal set and eigenvalues of a class of twisted Dirac operators on closed surfaces and point out how this inequality naturally arises as an eigenvalue estimate for the $\rm Spin^c$ Dirac operator.
Branding, Volker
core   +1 more source

An operator inequality [PDF]

International Journal of Mathematics and Mathematical Sciences, 1983
An inequality is proved in abstract separable Hilbert space H where A and B are bounded self‐adjoint positive operators defined in H such that R(A) = R(B) and R(A) is closed.
openaire   +3 more sources

Curvature inequalities and extremal operators [PDF]

Illinois Journal of Mathematics, 2019
19 ...
Misra, Gadadhar, Reza, Md. Ramiz
openaire   +3 more sources

Remarks on an operator Wielandt inequality

, 2015
Let $A$ be a positive operator on a Hilbert space $\mathcal{H}$ with $00.$$ We consider several upper bounds for $\frac{1}{2}|\Gamma+\Gamma^{*}|$.
Zhang, Pingping
core   +2 more sources

Entropic formulation of the uncertainty principle for the number and annihilation operators

, 2011
An entropic approach to formulating uncertainty relations for the number-annihilation pair is considered. We construct some normal operator that traces the annihilation operator as well as commuting quadratures with a complete system of common ...
Rastegin, Alexey E.
core   +1 more source

Poincaré-Type Inequalities for the Composite Operator in L𝒜-Averaging Domains

Abstract and Applied Analysis, 2014
We first establish the local Poincaré inequality with L𝒜-averaging domains for the composition of the sharp maximal operator and potential operator, applied to the nonhomogenous A-harmonic equation.
Guannan Shi, Yuming Xing, Baiqing Sun
doaj   +1 more source

An operator inequality

Linear Algebra and its Applications, 1990
Authors have proved some results on an operator inequality in Hilbert space.
Corach, G., Porta, H., Recht, L.
openaire   +1 more source

The Hadamard Determinant Inequality - Extensions to Operators on a Hilbert Space

, 2017
A generalization of classical determinant inequalities like Hadamard's inequality and Fischer's inequality is studied. For a version of the inequalities originally proved by Arveson for positive operators in von Neumann algebras with a tracial state, we ...
Nayak, Soumyashant
core   +1 more source

Inequalities for Shepard-type operators [PDF]

Journal of Mathematical Inequalities, 2018
Summary: Direct and converse approximation error estimates for generalized Shepard operators are given, improving analogous inequalities for well-known Shepard operators. As application in CAGD, generalized degree elevation algorithms for modeling the shape of Shepard-type curves are presented, improving previous techniques.
DELLA VECCHIA, Biancamaria, Amato, Umberto   +1 more
openaire   +3 more sources