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Uniform H?lder Estimates in a Class of Elliptic Systems and Applications to Singular Limits in Models for Diffusion Flames

机译:一类椭圆系统的一致Hilder估计及其在扩散火焰模型中的奇异极限的应用

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摘要

The main result of this paper is a general H?lder estimate in a class of singularly perturbed elliptic systems. This estimate is applied to the study of the well-known Burke–Schuman approximation in flame theory. After reviewing some classical cases (equidiffusional case; high activation energy approximation) we turn to the non-equidiffusional case, and to nonlinear diffusion models. The limiting problems are nonlinear elliptic equations; they have H?lder or Lipschitz maximal global regularity. A natural question is then whether this regularity is kept uniformly throughout the approximation process, and we show that this is true in general.
机译:本文的主要结果是一类奇摄动椭圆系统的一般Hilder估计。该估计用于火焰理论中著名的Burke-Schuman近似的研究。在回顾了一些经典情况(等价扩散情况;高活化能近似)之后,我们转向非等价扩散情况和非线性扩散模型。极限问题是非线性椭圆方程。他们具有H?lder或Lipschitz最大全局正则性。一个自然的问题是,在整个逼近过程中是否均匀地保持这种规律性,我们证明这通常是正确的。

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