Results 31 to 40 of about 1,724,768 (187)

Twisted K-theory and finite-dimensional approximation [PDF]

open access: yes, 2008
We provide a finite-dimensional model of the twisted K-group twisted by any degree three integral cohomology class of a CW complex. One key to the model is Furuta's generalized vector bundle, and the other is a finite-dimensional approximation of ...
A. Kapustin   +10 more
core   +3 more sources

Advanced Fractional Mathematics, Fractional Calculus, Algorithms and Artificial Intelligence with Applications in Complex Chaotic Systems

open access: yesChaos Theory and Applications, 2023
Chaos, comprehended characteristically, is the mathematical property of a dynamical system which is a deterministic mathematical model in which time can be either continuous or discrete as a variable.
Dumitru Baleanu, Yeliz Karaca
doaj  

Loop Corrections in Non-Linear Cosmological Perturbation Theory [PDF]

open access: yes, 1995
Using a diagrammatic approach to Eulerian perturbation theory, we analytically calculate the variance and skewness of the density and velocity divergence induced by gravitational evolution from Gaussian initial conditions, including corrections *beyond ...
Frieman, Joshua, Scoccimarro, Roman
core   +2 more sources

Different Variants of Bernstein Kantorovich Operators and Their Applications in Sciences and Engineering Field

open access: yesChaos Theory and Applications, 2023
In this article, we investigate various Bernstein-Kantorovich variants together with their approximation properties. Nowadays, these variants of Bernstein-Kantorovich operators have been a source of inspiration for researchers as it helps to approximate ...
Sumit Kaur Bhatia   +2 more
doaj   +1 more source

Extension of simultaneous Diophantine approximation algorithm for partial approximate common divisor variants

open access: yesIET Information Security, 2021
A simultaneous Diophantine approximation (SDA) algorithm takes instances of the partial approximate common divisor (PACD) problem as input and outputs a solution.
Wonhee Cho, Jiseung Kim, Changmin Lee
doaj   +1 more source

New theorems in approximation theory

open access: yesمجلة بغداد للعلوم, 2010
The aim of this paper is to prove some results for equivalence of moduli of smoothnes in approximation theory , we used a"non uniform" modulus of smoothness and the weighted Ditzian –Totik moduli of smoothness in by spline functions ,several ...
Baghdad Science Journal
doaj   +1 more source

Fast and low‐power leading‐one detectors for energy‐efficient logarithmic computing

open access: yesIET Computers & Digital Techniques, 2021
The logarithmic number system (LNS) can be used to simplify the computation of arithmetic functions, such as multiplication. This article proposes three leading‐one detectors (LODs) to speed up the binary logarithm calculation in the LNS.
Mohammad Saeed Ansari   +3 more
doaj   +1 more source

Unsupervised Attribute Reduction Algorithm for Mixed Data Based on Fuzzy Optimal Approximation Set

open access: yesMathematics, 2023
Fuzzy rough set theory has been successfully applied to many attribute reduction methods, in which the lower approximation set plays a pivotal role. However, the definition of lower approximation used has ignored the information conveyed by the upper ...
Haotong Wen, Shixin Zhao, Meishe Liang
doaj   +1 more source

Approximation Theory XV: San Antonio 2016 [PDF]

open access: yes, 2017
These proceedings are based on papers presented at the international conference Approximation Theory XV, which was held May 22\u201325, 2016 in San Antonio, Texas.
DE MARCHI, Stefano   +2 more
core   +1 more source

Positivity Constraints on Chiral Perturbation Theory Pion-Pion Scattering Amplitudes [PDF]

open access: yes, 1998
We test the positivity property of the chiral perturbation theory (ChPT) pion-pion scattering amplitudes within the Mandelstam triangle. In the one-loop approximation, ${\cal O}(p^4)$, the positivity constrains only the coefficients $b_3$ and $b_4 ...
Diţă, Petre
core   +2 more sources

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