Results 11 to 20 of about 449,355 (209)

Integrally Closed Residuated Lattices [PDF]

open access: yes, 2020
A residuated lattice is said to be integrally closed if it satisfies the ...
Möllerström Lauridsen, Frederik   +2 more
core   +2 more sources

$\Psi$-bounded solutions for a Lyapunov matrix differential equation [PDF]

open access: yes, 2009
It is proved a necessary and sufficient condition for the existence of at least one $\Psi$-bounded solution of a linear nonhomogeneous Lyapunov matrix differential ...
Diamandescu, Aurel   +2 more
core   +2 more sources

Bounded and compact Toeplitz+Hankel matrices [PDF]

open access: yes, 2021
We show that an infinite Toeplitz+Hankel matrix $T(\varphi) + H(\psi)$ generates a bounded (compact) operator on $\ell^p(\mathbb{N}_0)$ with $1\leq p\leq \infty$ if and only if both $T(\varphi)$ and $H(\psi)$ are bounded (compact). We also give analogous
Ehrhardt, Torsten   +2 more
core   +1 more source

On $\Psi$-bounded solutions for non-homogeneous matrix Lyapunov systems on $\mathbb{R}$ [PDF]

open access: yes, 2009
In this paper we provide necesssary and sufficient conditions for the existence of at least one $\Psi$-bounded solution on $\mathbb{R}$ for the system $X'=A(t)X +XB(t)+F(t)$, where $F(t)$ is a Lebesgue $\Psi$-integrable matrix valued function on ...
Murty, M.S.N.   +3 more
core   +2 more sources

Existence of $\Psi$-bounded solutions for nonhomogeneous Lyapunov matrix differential equations on $R$ [PDF]

open access: yes, 2010
In this paper, we give a necessary and sufficient condition for the existence of at least one $\Psi$-bounded solution of a linear nonhomogeneous Lyapunov matrix differential equation on $\mathbb{R}$.
Diamandescu, Aurel   +2 more
core   +2 more sources

Higher differentiability for bounded solutions to a class of obstacle problems with $(p,q)$-growth [PDF]

open access: yes, 2022
We establish the higher fractional differentiability of bounded minimizers to a class of obstacle problems with non-standard growth conditions of the form \begin{gather*} \min \biggl\{ \displaystyle\int_{\Omega} F(x,Dw)dx \ : \ w \in \mathcal{K}_{\psi ...
Grimaldi, Antonio Giuseppe
core   +1 more source

Existence of $\Psi$-bounded solutions for linear difference equations on $\mathbb{Z}$ [PDF]

open access: yes, 2008
In this paper, we give a necessary and sufficient condition for the existence of $\Psi$-bounded solutions for the nonhomogeneous linear difference equation x(n + 1) = A(n)x(n) + f(n) on $\mathbb{Z}$.
Diamandescu, Aurel, Aurel Diamandescu
core   +2 more sources

Picosecond fluorescence of intact and dissolved PSI-LHCI crystals [PDF]

open access: yes, 2008
Over the past several years, many crystal structures of photosynthetic pigment-protein complexes have been determined, and these have been used extensively to model spectroscopic results obtained on the same proteins in solution.
Nelson, N.   +18 more
core   +2 more sources

Existence of solutions of nonlinear differential equations with $\psi$-exponential or $\psi$-ordinary dichotomous linear part in a Banach space [PDF]

open access: yes, 2014
In this article we consider nonlinear differential equations with $\psi$-exponential and $\psi$-ordinary dichotomous linear part in a Banach space. By the help of the fixed point principle of Banach sufficient conditions are found for the existence of ...
Zahariev, Andrey   +7 more
core   +2 more sources

Decomposition of an Integrally Convex Set into a Minkowski Sum of Bounded and Conic Integrally Convex Sets

open access: yes, 2023
Every polyhedron can be decomposed into a Minkowski sum (or vector sum) of a bounded polyhedron and a polyhedral cone. This paper establishes similar statements for some classes of discrete sets in discrete convex analysis, such as integrally convex sets,
Murota, Kazuo, Tamura, Akihisa
core  

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