共查询到20条相似文献,搜索用时 0 毫秒
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1999,328(10):939-943
We present a non-diffusive scheme using a flux-limiter approach. This limiter verifies L∞-stability and TVD conditions. The convergence is established. We identify a class of functions (dense in L1) that are advected exactly. 相似文献
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1999,328(4):297-302
In this Note, we are interested in the possible continuation after the blow-up time Tm of radially symmetric positive classical solutions u of the heat equation with nonlinearity f(u) = up, where p > 1. We say that u blows up completely after Tm if u can not be extended beyond Tm (even in the weak sense). We obtain a complete blow up criterion which relies on the asymptotic behaviour of u around the blow-up singularity x = 0. 相似文献
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Hammadi Abidi 《Journal de Mathématiques Pures et Appliquées》2009,91(1):80-99
In this article we prove global existence and uniqueness result for the 2D Boussinesq system with non linear thermal diffusion in some critical spaces. 相似文献
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André Markoff 《Mathematische Annalen》1896,47(4):598-603
Sans résuméExtrait d'une lettre adressée à Mr. Klein 相似文献
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1999,328(6):485-488
We solve the global Cauchy problem, with small initial data, in the space of the holomorphic functions with respect to t and Gevrey class with respect to x. We establish the existence and the stability of the solution to Cauchy problem with nul initial data without hyperbolicity hypothesis. In the stationary case, we give estimates of life span of the solutions with respect to size of the initial data. 相似文献
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1997,324(3):265-270
We prove the existence of weak solutions of the spatially homogeneous Boltzmann equation without angular cut-off assumption for inverse sth power molecules with s ≥ 7/3, and general initial data with bounded mass, kinetic energy and entropy. Next, we show the convergence of these solutions to solutions of the Landau-Fokker-Planck equation when the collision kernel concentrates around the value π/2 相似文献
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Torsten Carleman 《Acta Mathematica》1933,60(1):91-146
Sans résumé
Dédié àM. E. Holmgren à l'occasion de son soixantième anniversaire. 相似文献
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Jacques Demongeot Ali Laksaci Fethi Madani Mustapha Rachdi 《Comptes Rendus Mathematique》2010,348(15-16):931-934
In this Note, we introduce the local linear estimation of the conditional density of a scalar response variable given a random variable taking values in a semi-metric space. Under some general conditions, we establish the pointwise and uniform almost complete convergences with rates of this estimator. Moreover, as an application, we use the obtained results to derive some asymptotic properties for the local linear estimator of the conditional mode. 相似文献
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Georges de Rham 《Commentarii Mathematici Helvetici》1954,28(1):346-352
Sans résumé
Dédié à Monsieur Heinz Hopf pour son soixantième anniversaire 相似文献
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1998,326(6):709-712
We give a short proof of a part of the Bourgain's result from [3]. More precisely, we prove that the Cauchy problem for the Kadomtsev-Petviashvili equation is locally well posed in Sobolev spaces with positive index. 相似文献
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《Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science》1998,326(12):1427-1432
In this paper, we introduce a new numerical scheme for the nonlinear Schrödinger equation and the Davey-Stewartson systems. This is a relaxation type scheme that avoids the resolution of nonlinear systems. We give convergence results for the semi-discret version, locally in time for all data and globally in time for small data. 相似文献
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