Results 11 to 20 of about 21,521 (260)
A generalized variational principle in b-metric spaces [PDF]
Le Matematiche, 2014 In this paper we establish and prove a generalized variational principle for b-metric spaces. As a consequence, we obtain a weak Zhong-type variational principle in b-metric spaces.
Csaba Farkas +2 more
doaj +2 more sources
, 2004 Variational integrators are a class of discretizations for mechanical systems which are derived by discretizing Hamilton's principle of stationary action.
West, Matthew
core +1 more source
Relative Entropy and Variational Properties of Generalized Gibbsian Measures [PDF]
, 2004 We study the relative entropy density for generalized Gibbs measures. We first show its existence and obtain a familiar expression in terms of entropy and relative energy for a class of “almost Gibbsian measures” (almost sure continuity of conditional ...
Ny, Arnaud Le, +12 more
core +1 more source
On the structure of minimizers of causal variational principles in the non-compact and equivariant settings [PDF]
, 2012 We derive the Euler-Lagrange equations for minimizers of causal variational principles in the non-compact setting with constraints, possibly prescribing symmetries.
Finster, Felix, Bernard, Yann
core +1 more source
A generalized form of Ekeland’s variational principle
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 In this paper we prove a generalized version of the Ekeland variational principle, which is a common generalization of Zhong variational principle and Borwein Preiss Variational principle.
Farkas Csaba
doaj +1 more source
Turbulent flows in channels and pipes
Vietnam Journal of Mechanics, 2007 A variational principle for channel and pipe flows of incompressible viscous fluid is proposed. For low Reynolds numbers this variational principle reduces to the principle of minimum dissipation. For high Reynolds numbers it enables one to calculate the
Khanh Le Chau
doaj +1 more source
Gaussian time-dependent variational principle for the finite-temperature anharmonic lattice dynamics
Physical Review Research, 2021 The anharmonic lattice is a representative example of an interacting, bosonic, many-body system. The self-consistent harmonic approximation has proven versatile for the study of the equilibrium properties of anharmonic lattices.
Jae-Mo Lihm, Cheol-Hwan Park
doaj +1 more source
Journal of the European Optical Society-Rapid Publications, 2023 The parameter dynamics of super-sech and super-Gaussian pulses for the perturbed nonlinear Schrödinger’s equation with power-law nonlinearity is obtained in this article. The variational principle successfully recovers this dynamical system.
Zayed Elsayed M.E. +10 more
doaj +1 more source
Variational Time Integrators in Computational Solid Mechanics [PDF]
, 2003 This thesis develops the theory and implementation of variational integrators for computational solid mechanics problems, and to some extent, for fluid mechanics problems as well.
Lew, Adrián José
core +1 more source
Demonstratio Mathematica, 2022 This paper presents some variants of minimal point theorem together with corresponding variants of Ekeland variational principle. In the second part of this article, there is a discussion on Ekeland variational principle and minimal point theorem ...
Meghea Irina, Stamin Cristina Stefania
doaj +1 more source