Results 41 to 50 of about 1,950,938 (331)

Asymptotic Normality in Linear Regression with Approximately Sparse Structure

open access: yesMathematics, 2022
In this paper, we study the asymptotic normality in high-dimensional linear regression. We focus on the case where the covariance matrix of the regression variables has a KMS structure, in asymptotic settings where the number of predictors, p, is ...
Saulius Jokubaitis, Remigijus Leipus
doaj   +1 more source

Inequities in the Shanks–Rényi prime number race: An asymptotic formula for the densities [PDF]

open access: yes, 2009
Chebyshev was the first to observe a bias in the distribution of primes in residue classes. The general phenomenon is that if a is a nonsquare (mod q) and b is a square (mod q), then there tend to be more primes congruent to a (mod q) than b (mod q) in ...
Daniel Fiorilli, G. Martin
semanticscholar   +1 more source

Zamolodchikov asymptotic formula and instanton expansion in = 2 SUSY Nf = 2Nc QCD [PDF]

open access: yes, 2009
The AGT relations allow to convert the Zamolodchikov asymptotic formula for conformal block into the instanton expansion of the Seiberg-Witten prepotential for the theory with two colors and four fundamental flavors. This provides an explicit formula for
A. Marshakov, A. Mironov, A. Morozov
semanticscholar   +1 more source

Dynamical analysis of a heroin–cocaine epidemic model with nonlinear incidence and spatial heterogeneity

open access: yesJournal of Biological Dynamics, 2023
In this paper, we investigated a new heroin–cocaine epidemic model which incorporates spatial heterogeneity and nonlinear incidence rate. The main project of this paper is to explore the threshold dynamics in terms of the basic reproduction number ...
Jinhu Xu
doaj   +1 more source

A Large k Asymptotics of Witten's Invariant of Seifert Manifolds

open access: yes, 1993
We calculate a large $k$ asymptotic expansion of the exact surgery formula for Witten's $SU(2)$ invariant of Seifert manifolds. The contributions of all flat connections are identified. An agreement with the 1-loop formula is checked.
C. Lescop   +12 more
core   +1 more source

Asymptotic Formulas and Generalized Dedekind Sums [PDF]

open access: yesExperimental Mathematics, 1998
We find asymptotic formulas as $n\to\infty$ for the coefficients $a(r\hbox{,}\,n)$ defined by $$ \prod_{\nu=1}^\infty\,(1-x^\nu)^{-\nu^r} =\sum_{n=0}^\infty a(r\hbox{,}\,n)x^n\hbox{.} $$ (The case $r=1$ gives the number of plane partitions of $n$.) Generalized Dedekind sums occur naturally and are studied using the Finite Fourier Transform. The methods
openaire   +2 more sources

Asymptotic ω-Primality of Finitely Generated Cancelative Commutative Monoids

open access: yesMathematics, 2023
The computation of ω-primality has been object of study, mainly, for numerical semigroups due to its multiple applications to the Factorization Theory. However, its asymptotic version is less well known.
Juan Ignacio García-García   +2 more
doaj   +1 more source

Semiclassical Analysis of the Wigner $9J$-Symbol with Small and Large Angular Momenta

open access: yes, 2011
We derive a new asymptotic formula for the Wigner $9j$-symbol, in the limit of one small and eight large angular momenta, using a novel gauge-invariant factorization for the asymptotic solution of a set of coupled wave equations.
A. F. Nikiforov   +10 more
core   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

On the Smarandache LCM dual function [PDF]

open access: yes, 2007
The main purpose of this paper is using the elementary method to study the calculating problem of a Dirichlet series involving the Smarandache LCM dual function SL*(n) and the mean value distribution property of SL*(n), obtain an exact calculating ...
Chengliang, Tian, Yuan, Na
core   +1 more source

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