Results 11 to 20 of about 3,159 (156)
Spectral radius of S-essential spectra
Математичні Студії, 2020 In this paper, we study the spectral radius of some S-essential spectra of a bounded linear operator defined on a Banach space. More precisely, via the concept of measure of noncompactness,we show that for any two bounded linear operators $T$ and $S ...
C. Belabbaci
doaj +1 more source
Linear Matrix Inequality Approaches to Koopman Operator Approximation
CoRR, 2021 The regression problem associated with finding a matrix approximation of the Koopman operator from data is considered. The regression problem is formulated as a convex optimization problem subject to linear matrix inequality (LMI) constraints. Doing so allows for additional LMI constraints to be incorporated into the regression problem.
Steven Dahdah, James Richard Forbes
openaire +2 more sources
Further Inequalities for the Weighted Numerical Radius of Operators
Mathematics, 2022 This paper deals with the so-called A-numerical radius associated with a positive (semi-definite) bounded linear operator A acting on a complex Hilbert space H. Several new inequalities involving this concept are established.
Najla Altwaijry +2 more
doaj +1 more source
Vallée-Poussin theorem for Hadamard fractional functional differential equations
Applied Mathematics in Science and Engineering, 2023 We propose necessary and sufficient conditions for the negativity of the two-point boundary value problem in the form of the Vallée-Poussin theorem about differential inequalities for the Hadamard fractional functional differential problem \[ \begin ...
Martin Bohner +4 more
doaj +1 more source
A Hilbert-Type Linear Operator with the norm and Its Applications
Journal of Inequalities and Applications, 2009 A Hilbert-type linear operator T:ℓϕp→ℓψp is defined. As for applications, a more precise operator inequality with the norm and its equivalent forms are deduced. Moreover, three equivalent reverses from them are given as
Wuyi Zhong
doaj +2 more sources
IEEE Access, 2021 This work focuses on the stabilization issue for a class of singular stochastic systems against fractional Gaussian noise driven by fractional Brownian motion.
S. Sweetha +3 more
doaj +1 more source
On integral inequalities associated with a linear operator equation [PDF]
Proceedings of the American Mathematical Society, 1984 In this paper we apply control theoretic concepts to formulate and solve a generalized problem for the determination of best possible constants in integral inequalities. We investigate the problem of existence of functions for which the best constant is attained, and also the conditions satisfied by these functions.
openaire +1 more source
New Refinement of the Operator Kantorovich Inequality
Mathematics, 2019 We focus on the improvement of operator Kantorovich type inequalities. Among the consequences, we improve the main result of the paper [H.R. Moradi, I.H. Gümüş, Z.
Hamid Reza Moradi +2 more
doaj +1 more source
Further refinements of reversed AM–GM operator inequalities
Journal of Inequalities and Applications, 2020 In this paper, we shall give further improvements of reversed AM–GM operator inequalities due to Yang et al. (Math. Slovaca 69:919–930, 2019) for matrices and positive linear map.
Yonghui Ren, Pengtong Li
doaj +1 more source
Linear operators inequality for $n$-convex functions at a point [PDF]
Mathematical Inequalities & Applications, 2015 We study necessary and sufficient conditions on inear operators A and B for inequality Af
Pečarić, Josip +2 more
openaire +3 more sources