Results 11 to 20 of about 52,593 (299)

Penalty methods for a variational quantum eigensolver

open access: yesPhysical Review Research, 2021
The variational quantum eigensolver (VQE) is a promising algorithm to compute eigenstates and eigenenergies of a given quantum system that can be performed on a near-term quantum computer.
Kohdai Kuroiwa, Yuya O. Nakagawa
doaj   +1 more source

To what extent is your data assimilation scheme designed to find the posterior mean, the posterior mode or something else?

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2016
Recently there has been a surge in interest in coupling ensemble-based data assimilation methods with variational methods (commonly referred to as 4DVar).
Daniel Hodyss   +2 more
doaj   +1 more source

Crystalline variational methods [PDF]

open access: yesProceedings of the National Academy of Sciences, 2002
A surface free energy function is defined to be crystalline if its Wulff shape (the equilibrium crystal shape) is a polyhedron. All the questions that one considers for the area functional, where the surface free energy per unit area is 1 for all normal directions, can be considered for crystalline surface free energies.
openaire   +2 more sources

Some new classes of general quasi variational inequalities

open access: yesAIMS Mathematics, 2021
In this paper, we introduce and consider some new classes of general quasi variational inequalities, which provide us with unified, natural, novel and simple framework to consider a wide class of unrelated problems arising in pure and applied sciences ...
Muhammad Aslam Noor   +2 more
doaj   +1 more source

Modeling Variational Inpainting Methods With Splines

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
Mathematical methods of image inpainting often involve the discretization of a given continuous model. Typically, this is done by a pointwise discretization.
Florian Boßmann   +2 more
doaj   +1 more source

Variational Methods for Atoms and the Virial Theorem

open access: yesAtoms, 2022
In the case of the one-electron Dirac equation with a point nucleus, the virial theorem (VT) states that the ratio of the kinetic energy to potential energy is exactly −1, a ratio that can be an independent test of the accuracy of a computed solution ...
Charlotte Froese Fischer   +1 more
doaj   +1 more source

Off-The-Grid Variational Sparse Spike Recovery: Methods and Algorithms

open access: yesJournal of Imaging, 2021
Gridless sparse spike reconstruction is a rather new research field with significant results for the super-resolution problem, where we want to retrieve fine-scale details from a noisy and filtered acquisition.
Bastien Laville   +2 more
doaj   +1 more source

Some Aspects of Extended General Variational Inequalities

open access: yesAbstract and Applied Analysis, 2012
Noor (“Extended general variational inequalities,” 2009, “Auxiliary principle technique for extended general variational inequalities,” 2008, “Sensitivity analysis of extended general variational inequalities,” 2009, “Projection iterative methods for ...
Muhammad Aslam Noor
doaj   +1 more source

Extended Extragradient Methods for Generalized Variational Inequalities

open access: yesJournal of Applied Mathematics, 2012
We suggest a modified extragradient method for solving the generalized variational inequalities in a Banach space. We prove some strong convergence results under some mild conditions on parameters. Some special cases are also discussed.
Yonghong Yao   +3 more
doaj   +1 more source

Regularization and Iterative Methods for Monotone Variational Inequalities

open access: yesFixed Point Theory and Applications, 2010
We provide a general regularization method for monotone variational inequalities, where the regularizer is a Lipschitz continuous and strongly monotone operator. We also introduce an iterative method as discretization of the regularization method.
Xu Hong-Kun, Xu Xiubin
doaj   +2 more sources

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