Results 71 to 80 of about 73,015 (248)
Estimates for the ratio of the first two eigenvalues of the Dirichlet-Laplace operator with a drift [PDF]
Contributions to Mathematics, 2021 Serban Barbuleanu +2 more
doaj +1 more source
Two-eigenfunction correlation in a multifractal metal and insulator
, 2007 We consider the correlation of two single-particle probability densities $|\Psi_{E}({\bf r})|^{2}$ at coinciding points ${\bf r}$ as a function of the energy separation $\omega=|E-E'|$ for disordered tight-binding lattice models (the Anderson models) and
A. D. Mirlin +10 more
core +1 more source
Indeterminacy estimates, eigenfunctions and lower bounds on Wasserstein distances [PDF]
, 2021 Nicolò De Ponti, Sara Farinelli
openalex +1 more source
Methodology for Topological Interface Engineering in 2D Photonic Crystals
Advanced Photonics Research, Volume 7, Issue 1, January 2026.This article introduces an automated framework for topological photonic crystal design. It features an iterative band connection method for identifying band crossings, a data‐driven approach for band symmetry recognition, and analysis of how topological mode dispersion trades off with photonic band‐gap size.
Ondřej Novák +2 more
wiley +1 more source
Error investigation of finite element approximation for a nonlinear Sturm–Liouville problem
Учёные записки Казанского университета: Серия Физико-математические науки, 2017 A positive definite differential eigenvalue problem with coefficients depending nonlinearly on the spectral parameter has been studied. The differential eigenvalue problem is formulated as a variational eigenvalue problem in a Hilbert space with bilinear
A.A. Samsonov +2 more
doaj
Eigenfunction expansions in ℝⁿ
Proceedings of the American Mathematical Society, 2011 The main goal of this paper is to extend in R n \mathbb {R}^n a result of Seeley on eigenfunction expansions of real analytic functions on compact manifolds. As a counterpart of an elliptic operator in a compact manifold, we consider in R n \mathbb {R}^n
T. Gramchev +2 more
openaire +4 more sources
Stochastic Duality and Eigenfunctions [PDF]
, 2019 We start from the observation that, anytime two Markov generators share an eigenvalue, the function constructed from the product of the two eigenfunctions associated to this common eigenvalue is a duality function. We push further this observation and provide a full characterization of duality relations in terms of spectral decompositions of the ...
Redig F., Sau F.
openaire +3 more sources
Advanced Science, Volume 13, Issue 2, 9 January 2026.A self‐consistent ab initio many‐body perturbation theory combined with locally exact dynamical mean field theory is employed to compute the sub‐bandgap electronic transitions in van der Waals antiferromagnets. The rich interplay between the magnetic ordering and spin‐entangled optical transitions, manifested as photoluminescence and absorption ...
Dipankar Jana +7 more
wiley +1 more source
Advanced Science, Volume 13, Issue 5, 27 January 2026.We show that solutal Marangoni flows in thin films climbing the outer surfaces of hydrophilic obstacles break circular Belousov‐Zhabotinsky waves into striking flower‐like patterns. Evaporation‐driven surface‐tension gradients, coupled with gravity, trigger the instability; above a threshold, petal number scales linearly with obstacle diameter ...
Sangram Gore +9 more
wiley +1 more source
Asymptotic properties of the problem on eigenvibrations of the bar with attached load
Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The ordinary second-order differential eigenvalue problem describing eigenvibrations of an elastic bar with a load attached to its end was investigated. The problem has an increasing sequence of positive simple eigenvalues with a limit point at infinity.
A.A. Samsonov +2 more
doaj +1 more source