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arXiv 2209.13554math.AP
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一个耦合Quasi-Linear Parabolic Equation和线性双曲组模型的存在性结果

Existence Result For a Model Coupling a Quasi-Linear Parabolic Equation and a Linear Hyperbolic System

Djamal Ait-Akli

摘要:

证明了一类线性Lamé方程组与拟线性斯托克斯方程耦合问题解的整体存在性.这个全局耦合问题的解被看作是某个非线性算子$T$的不动点。我们构造,使用正则化过程,一个序列$(T^ε)_ε$的辅助逼近紧算子。然后,我们建立,使用Banach和Schaeffer不动点定理的组合,存在的不动点到每个操作$T^ε$。最后证明了这些不动点收敛于$T$的不动点

英文摘要:

We prove globally-in-time existence of solution for a problem coupling the linear Lamé system and the quasi-linear Stokes equation. A solution of this global coupled problem is viewed as the fixed point of some non-linear operator $T$. We construct, using a regularization procedure, a sequence $(T^ε)_ε$ of auxiliary approximating compact operators. Then we establish, using a combination of Banach and Schaeffer fixed point theorems, the existence of fixed points to every operator $T^ε$. Finally we prove that these fixed points converge to the fixed point of $T$

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