Results 11 to 20 of about 430,873 (249)

Global Existence and Uniqueness of Solution of Atangana–Baleanu Caputo Fractional Differential Equation with Nonlinear Term and Approximate Solutions

open access: yesInternational Journal of Differential Equations, 2021
In this paper, a class of fractional order differential equation expressed with Atangana–Baleanu Caputo derivative with nonlinear term is discussed.
Meryeme Hassouna   +2 more
doaj   +1 more source

Approximate set union via approximate randomization [PDF]

open access: yesTheoretical Computer Science, 2020
We develop an randomized approximation algorithm for the size of set union problem $\arrowvert A_1\cup A_2\cup...\cup A_m\arrowvert$, which given a list of sets $A_1,...,A_m$ with approximate set size $m_i$ for $A_i$ with $m_i\in \left((1- _L)|A_i|, (1+ _R)|A_i|\right)$, and biased random generators with $Prob(x=\randomElm(A_i))\in \left[{1- _L\over
Fu, Bin, Gu, Pengfei, Zhao, Yuming
openaire   +3 more sources

Optimal Control Problem for Non-linear Degenerate Parabolic Variation Inequality: Solvability and Attainability Issues

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
We investigate the optimal control problem with respect to coefficients of the degenerate parabolic variational inequality. Since problems of this type can have the Lavrentieff effect, we consider the optimal control problem in a class of so-called ...
Nina V. Kasimova   +2 more
doaj   +1 more source

An approximation method using approximate approximations [PDF]

open access: yesApplicable Analysis, 2006
The aim of this article is to extend the method of approximate approximations to boundary value problems. This method was introduced by V. Maz'ya in 1991 and has been used until now for the approximation of smooth functions defined on the whole space and for the approximation of volume potentials.
Frank Müller, Werner Varnhorn
openaire   +1 more source

Approximating k-median via pseudo-approximation [PDF]

open access: yesProceedings of the forty-fifth annual ACM symposium on Theory of Computing, 2013
We present a novel approximation algorithm for $k$-median that achieves an approximation guarantee of $1+\sqrt{3}+ $, improving upon the decade-old ratio of $3+ $. Our approach is based on two components, each of which, we believe, is of independent interest.
Shi Li, Ola Svensson
openaire   +4 more sources

Approximating Perpetuities [PDF]

open access: yesMethodology and Computing in Applied Probability, 2007
We propose and analyze an algorithm to approximate distribution functions and densities of perpetuities. Our algorithm refines an earlier approach based on iterating discretized versions of the fixed point equation that defines the perpetuity. We significantly reduce the complexity of the earlier algorithm. Also one particular perpetuity arising in the
Knape, Margarete, Neininger, Ralph
openaire   +2 more sources

The Polis Discourse and the Evolution of Political Thought in Ancient Greece [PDF]

open access: yesدولت‌پژوهی
Extended AbstractIntroduction Any attempt to review the history of philosophical thought inevitably begins with ancient Greece. As the cradle of political thought, ancient Greece holds an influential position in the history of political thought.
Ehsan Kazemi, Morteza Kazemi
doaj   +1 more source

Approximation by the Extended Neural Network Operators of Kantorovich Type

open access: yesMathematics, 2023
Based on the idea of integral averaging and function extension, an extended Kantorovich-type neural network operator is constructed, and its error estimate of approximating continuous functions is obtained by using the modulus of continuity. Furthermore,
Chenghao Xiang   +3 more
doaj   +1 more source

Data Based Construction of Kernels for Semi-Supervised Learning With Less Labels

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
This paper deals with the problem of semi-supervised learning using a small number of training samples. Traditional kernel based methods utilize either a fixed kernel or a combination of judiciously chosen kernels from a fixed dictionary. In contrast, we
Hrushikesh Mhaskar   +3 more
doaj   +1 more source

Approximation of the Hilbert transform in the Lebesgue spaces

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
The Hilbert transform plays an important role in the theory and practice of signal processing operations in continuous system theory because of its relevance to such problems as envelope detection and demodulation, as well as its use in relating the ...
Rashid Aliev, Lale Alizade
doaj   +1 more source

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