Results 11 to 20 of about 439,504 (253)
Existence of solutions of nonlinear differential equations with $\psi$-exponential or $\psi$-ordinary dichotomous linear part in a Banach space [PDF]
Electronic Journal of Qualitative Theory of Differential Equations, 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 ...
Atanaska Georgieva +3 more
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On the $psi$-dichotomy for homogeneous linear differential equations
Electronic Journal of Differential Equations, 2006 In this article we present some conditions for the $psi$-dichotomy of the homogeneous linear differential equation $x'=A(t)x$. Under our condition every $psi$-integrally bounded function $f$ the nonhomogeneous linear differential equation $x'=A(t)x ...
Pham Ngoc Boi
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Molecules as metric measure spaces with Kato-bounded Ricci curvature [PDF]
Comptes Rendus. Mathématique, 2020 Set $\Psi :=\log (\tilde{\Psi })$, with $\tilde{\Psi }>0$ the ground state of an arbitrary molecule with $n$ electrons in the infinite mass limit (neglecting spin/statistics).
Güneysu, Batu, von Renesse, Max
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Psi-exponential dichotomy for linear differential equations in a Banach space
Electronic Journal of Differential Equations, 2013 In this article we extend the concept psi-exponential and psi-ordinary dichotomies for homogeneous linear differential equations in a Banach space.
Atanaska Georgieva +3 more
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AI-EXAFS: Physics-Informed Prediction of EXAFS from Atomic Structure. [PDF]
Adv Sci (Weinh)AI‐EXAFS presents a neural network to reproduce EXAFS. Trained on synthetic data and with a careful selection of the settings both for the physical representation of the system and following the experimental heuristic loss functions, the model is capable of reproducing EXAFS spectra for molecules from the tridimensional structure.
Heras-Domingo J +6 more
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Bounded and compact Toeplitz+Hankel matrices [PDF]
, 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
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Higher differentiability for bounded solutions to a class of obstacle problems with $(p,q)$-growth [PDF]
, 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
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Picosecond fluorescence of intact and dissolved PSI-LHCI crystals [PDF]
, 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
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Electronic Journal of Qualitative Theory of Differential Equations, 2023 This paper is devoted to studying the following quasilinear parabolic-elliptic-elliptic chemotaxis system \begin{equation*} \begin{cases} u_{t}=\nabla\cdot(\varphi(u)\nabla u-\psi(u)\nabla v)+au-bu^{\gamma},\ &\ \ x\in \Omega, \ t>0,\\[2.5mm] 0 ...
Chang-Jian Wang, Ya-Jie Zhu, Xin-Cai Zhu
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Electronic Journal of Qualitative Theory of Differential Equations, 2020 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
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