Results 31 to 40 of about 5,694,517 (306)
Asymptotic Estimates of Feynman Integrals [PDF]
Journal of Mathematical Physics, 1968 In this paper, we consider the problem of determining logarithmic, as well as polynomial, asymptotic estimates for certain convergent integrals containing parameters. We state and prove an asymptotic theorem which gives the logarithmic asymptotic behavior of a convergent integral where any subset of the parameters becomes large while the remaining ...
J. P. Fink
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Asymptotics for optimal design problems for the Schr\"odinger equation with a potential [PDF]
, 2018 We study the problem of optimal observability and prove time asymptotic observability estimates for the Schr\"odinger equation with a potential in $L^{\infty}(\Omega)$, with $\Omega\subset \mathbb{R}^d$, using spectral theory. An elegant way to model the
Merkurjev, Ekaterina, Waters, Alden
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Asymptotic estimates on the von Neumann inequality for homogeneous polynomials
Journal für die Reine und Angewandte Mathematik, 2015 By the von Neumann inequality for homogeneous polynomials there exists a positive constant C_{k,q} (n) such that for every
Daniel Galicer +2 more
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Asymptotic Estimates for the Parabolic-Elliptic Keller-Segel Model in the Plane [PDF]
, 2012 We investigate the large-time behavior of the solutions of the two-dimensional Keller-Segel system in self-similar variables, when the total mass is subcritical, that is less than 8 π after a proper adimensionalization.
J. Campos, J. Dolbeault
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Abstract and Applied Analysis, 2012 We study the nonsteady Stokes flow in a thin tube structure composed by two thin rectangles with lateral elastic boundaries which are connected by a domain with rigid boundaries.
R. Fares, G. P. Panasenko, R. Stavre
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Mathematical Biosciences and Engineering, 2023 This article discusses the problem of estimation with step stress partially accelerated life tests using Type-II progressively censored samples. The lifetime of items under use condition follows the two-parameters inverted Kumaraswamy distribution.
Manal M. Yousef +2 more
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Smoothness and asymptotic estimates of densities for SDEs with locally smooth coefficients and applications to square root-type diffusions [PDF]
, 2011 We study smoothness of densities for the solutions of SDEs whose coefficients are smooth and nondegenerate only on an open domain $D$. We prove that a smooth density exists on $D$ and give upper bounds for this density.
S. Marco
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Asymptotic Estimates of the Solution of a Restoration Problem with an Initial Jump
Journal of Applied Mathematics, 2014 The asymptotic behavior of the solution of the singularly perturbed boundary value problem is examined. The derivations prove that a unique pair exists, in which components and satisfy the equation and boundary value conditions .
D. Nurgabyl
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Recursive parameter estimation: asymptotic expansion [PDF]
Annals of the Institute of Statistical Mathematics, 2008 We consider estimation procedures which are recursive in the sense that each successive estimator is obtained from the previous one by a simple adjustment. The model considered in the paper is very general as we do not impose any preliminary restrictions on the probabilistic nature of the observation process and cover a wide class of nonlinear ...
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Asymptotic Estimates of Hierarchical Modeling [PDF]
Mathematical Models and Methods in Applied Sciences, 2003 In this paper we propose a way to analyze certain classes of dimension reduction models for elliptic problems in thin domains. We develop asymptotic expansions for the exact and model solutions, having the thickness as small parameter. The modeling error is then estimated by comparing the respective expansions, and the upper bounds obtained make clear
Arnold, Douglas N. +1 more
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