Results 81 to 90 of about 400 (106)

Evolution of the 1984 KKM theorem of Ky Fan

open access: yes, 2012
Recently we established the Knaster, Kuratowski, and Mazurkiewicz (KKM) theory on abstract convex spaces. In our research, we noticed that there are quite a few generalizations and applications of the 1984 KKM theorem of Ky Fan compared with his ...
Sehie Park
semanticscholar   +1 more source

The convergence rate of a golden ratio algorithm for equilibrium problems [PDF]

open access: yesarXiv, 2018
In this paper, we establish the $R$-linear rate of convergence of a golden ratio algorithm for solving an equilibrium problem in a Hilbert space. Several experiments are performed to show the numerical behavior of the algorithm and also to compare with others.
arxiv  

Adaptive image processing: first order PDE constraint regularizers and a bilevel training scheme [PDF]

open access: yesarXiv, 2019
A bilevel training scheme is used to introduce a novel class of regularizers, providing a unified approach to standard regularizers $TV$, $TGV^2$ and $NsTGV^2$. Optimal parameters and regularizers are identified, and the existence of a solution for any given set of training imaging data is proved by $\Gamma$-convergence. Explicit examples and numerical
arxiv  

Adaptive image processing: a bilevel structure learning approach for mixed-order total variation regularizers [PDF]

open access: yesarXiv, 2019
A class of mixed-order \emph{PDE}-constraint regularizer for image processing problem is proposed, generalizing the standard first order total variation $(TV)$. A semi-supervised (bilevel) training scheme, which provides a simultaneous optimization with respect to parameters and the new class of regularizers, is studied.
arxiv  

Determinants of pseudodifferential operators and complex deformations of phase space [PDF]

open access: yesarXiv, 2001
Consider an h-pseudodifferential operator P, whose symbol extends holomorphically to a tubular neighborhood of the real phase space and converges sufficiently fast to 1, so that the determinant of P is well-defined. We show that the modulus of this determinant is asymptotically bounded by an exponential of the integral of the logarithm of the modulus ...
arxiv  

Multivalued backward stochastic differential equations with time delayed generators

open access: yesOpen Mathematics, 2014
Diomande Bakarime, Maticiuc Lucian
doaj   +1 more source

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