Results 21 to 30 of about 439,504 (253)

Existence and multiplicity of eigenvalues for some double-phase problems involving an indefinite sign reaction term

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
We study the following class of double-phase nonlinear eigenvalue problems $$ -\operatorname{div}\left[\phi(x,|\nabla u|)\nabla u+\psi(x,|\nabla u|)\nabla u\right]=\lambda f(x,u) $$ in $\Omega$, $u=0$ on $\partial\Omega$, where $\Omega$ is a bounded ...
Vasile Uța
doaj   +1 more source

Evidence that the Y(4660) is a f_0(980)psi' bound state

open access: yesPhysics Letters B, 2008
We demonstrate that the experimental information currently available for the Y(4660) is consistent with its being a f_0(980)psi' molecule. Possible experimental tests of our hypothesis are presented.
Guo, Feng-Kun   +2 more
openaire   +2 more sources

Existence of Ψ-bounded solutions for sylvester matrix dynamical systems on time scales

open access: yesFilomat, 2018
In this paper, we study the existence criteria for ?-bounded solutions of Sylvester matrix dynamical systems on time scales. The advantage of studying this system is it unifies continuous and discrete systems. First, we prove a necessary and sufficient condition for the existence of atleast one ?-bounded solution for Sylvester matrix ...
Rao, B. V. Appa, Prasad, K. A. S. N. V.
openaire   +2 more sources

Derivation, L Ψ -Bounded Martingales and Covering Conditions [PDF]

open access: yesTransactions of the American Mathematical Society, 1986
Let ( Ω ,
openaire   +2 more sources

Existence of ψ-bounded solutions for linear difference equations

open access: yesApplied Mathematics Letters, 2007
The authors consider the linear difference system \[ x(n+1)=A(n)x(n)+f(n) \] Let \(\psi=diag\{\psi_1,\ldots,\psi_d\}\) with \(\psi_i:\mathbb{Z}_{+}\to(0,\infty)\). A sequence \(\phi:\mathbb{Z}_{+}\to \mathbb{R}^d\) is \(\psi\)-bounded on \(\mathbb{Z}_{+}\) if \(\psi\phi\) is bounded on \(\mathbb{Z}_{+}\); a sequence \(\phi:\mathbb{Z}_{+}\to \mathbb{R ...
Yuliang Han, Jialin Hong
openaire   +1 more source

A logical limit law for $231$-avoiding permutations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
We prove that the class of 231-avoiding permutations satisfies a logical limit law, i.e. that for any first-order sentence $\Psi$, in the language of two total orders, the probability $p_{n,\Psi}$ that a uniform random 231-avoiding permutation of size $n$
Michael Albert   +3 more
doaj   +1 more source

On the weighted fractional Pólya–Szegö and Chebyshev-types integral inequalities concerning another function

open access: yesAdvances in Difference Equations, 2020
The primary objective of this present paper is to establish certain new weighted fractional Pólya–Szegö and Chebyshev type integral inequalities by employing the generalized weighted fractional integral involving another function Ψ in the kernel.
Kottakkaran Sooppy Nisar   +4 more
doaj   +1 more source

Bounds for twisted symmetric square L-functions via half-integral weight periods

open access: yesForum of Mathematics, Sigma, 2020
We establish the first moment bound $$\begin{align*}\sum_{\varphi} L(\varphi \otimes \varphi \otimes \Psi, \tfrac{1}{2}) \ll_\varepsilon p^{5/4+\varepsilon} \end{align*}$$ for triple product L-functions, where $\Psi $ is a fixed Hecke ...
Paul D. Nelson
doaj   +1 more source

Some convergence results for nonlinear Baskakov-Durrmeyer operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2023
This paper is an introduction to a sequence of nonlinear Baskakov-Durrmeyer operators $(NBD_{n})$ of the form \[ (NBD_{n})(f;x) =\int_{0}^\infty K_{n}(x,t,f(t))\,dt \] with $x\in [0,\infty)$ and $n\in\mathbb{N}$.
H.E. Altin
doaj   +1 more source

An elliptic system involving p-Laplacian and a chemotactic term [PDF]

open access: yesOpuscula Mathematica
We study the nonlinear elliptic system: \[\begin{cases} u \in W^{1,p}_0(\Omega): -\operatorname{div} (a(x)|\nabla u|^{p-2}\nabla u) + u = -\operatorname{div} (a(x) u|\nabla \psi|^{p-2}\nabla \psi) + f(x), \\ \psi \in W^{1,p}_0(\Omega): -\operatorname{div}
Lucio Boccardo   +2 more
doaj   +1 more source

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