Results 31 to 40 of about 466,237 (288)
Asymptotic integration of systems of two wave equations with small parameter
Lietuvos Matematikos Rinkinys, 2016 In this article we consider a hyperbolic system of two weakly nonlinear equations. Coefficients of the equations and initial conditions are periodical functions of the space variable.
Aleksandras Krylovas
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Convergence rate of linear two-time-scale stochastic approximation
, 2004 We study the rate of convergence of linear two-time-scale stochastic approximation methods. We consider two-time-scale linear iterations driven by i.i.d. noise, prove some results on their asymptotic covariance and establish asymptotic normality.
Konda, Vijay R., Tsitsiklis, John N.
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Lyapunov functions for linear nonautonomous dynamical equations on time scales [PDF]
, 2006 The existence of a Lyapunov function is established following a method of Yoshizawa for the uniform exponential asymptotic stability of the zero solution of a nonautonomous linear dynamical equation on a time scale with uniformly bounded ...
Kloeden, Peter E., Zmorzynska, Alexandra
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The middle-scale asymptotics of Wishart matrices [PDF]
The Annals of Statistics, 2019 We study the behavior of a real $p$-dimensional Wishart random matrix with $n$ degrees of freedom when $n,p\rightarrow\infty$ but $p/n\rightarrow 0$. We establish the existence of phase transitions when $p$ grows at the order $n^{(K+1)/(K+3)}$ for every $k\in\mathbb{N}$, and derive expressions for approximating densities between every two phase ...
Chételat, Didier, Wells, Martin T.
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Asymptotic scaling and Monte Carlo data [PDF]
Proceedings of XXIIIrd International Symposium on Lattice Field Theory — PoS(LAT2005), 2005 It is a generally known problem that the behaviour predicted from perturbation theory for asymptotically free theories like QCD, i.e. asymptotic scaling, has not been observed in Monte Carlo simulations when the series is expressed in terms of the bare coupling g_0. This discrepancy has been explained in the past with the poor convergence properties of
Trivini, A., Allton, C. R.
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Dynamical systems approach to G2 cosmology [PDF]
, 2001 In this paper we present a new approach for studying the dynamics of spatially inhomogeneous cosmological models with one spatial degree of freedom.
Anguige K +42 more
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Minimax Estimation of Nonregular Parameters and Discontinuity in Minimax Risk
, 2014 When a parameter of interest is nondifferentiable in the probability, the existing theory of semiparametric efficient estimation is not applicable, as it does not have an influence function.
Bickel P. J. +7 more
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On Entropy Test for Conditionally Heteroscedastic Location-Scale Time Series Models
Entropy, 2017 This study considers the goodness of fit test for a class of conditionally heteroscedastic location-scale time series models. For this task, we develop an entropy-type goodness of fit test based on residuals.
Sangyeol Lee, Minjo Kim
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Computer-Aided Derivation of Multi-scale Models: A Rewriting Framework
, 2013 We introduce a framework for computer-aided derivation of multi-scale models. It relies on a combination of an asymptotic method used in the field of partial differential equations with term rewriting techniques coming from computer science.
Belkhir, Walid +2 more
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Multiple-scale analysis and renormalization for pre-asymptotic scalar transport [PDF]
, 2004 Pre-asymptotic transport of a scalar quantity passively advected by a velocity field formed by a large-scale component superimposed to a small-scale fluctuation is investigated both analytically and by means of numerical simulations.
Mazzino, A., Musacchio, S., Vulpiani, A.
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