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arXiv 2007.01631math.APmath.OC
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一类扰动非线性迁移方程测度解的存在性和参数可微性

Existence and differentiability in parameter of the measure solution to a perturbed non-linear transport equation

Piotr Gwiazda, Sander C. Hille, Kamila Łyczek

摘要:

我们考虑非线性迁移方程在测度上的扰动,即初始条件$μ_0$和解$μ_t^h$都是有界Radon测度$\mathcal{M}(\mathbb{R}^d)$ .扰动发生在速度场中,也发生在右手边的标量函数中。它表明,该解决方案是可微的扰动参数$h$,即该衍生物是一个元素的一个正常的巴拿赫空间。这个结果推广了我们以前考虑线性输运方程的结果。该证明利用了基于对线性方程的研究的非线性问题的近似。

英文摘要:

We consider a perturbation in the non-linear transport equation on measures i.e. both initial condition $μ_0$ and the solution $μ_t^h$ are bounded Radon measures $\mathcal{M}(\mathbb{R}^d)$. The perturbations occur in the velocity field and also in the right-hand side scalar function. It is shown that the solution is differentiable with respect to the perturbation parameter $h$ i.e. that derivative is an element of a proper Banach space. This result extends our previous result which considered the linear transport equation. The proof exploits approximation of the non-linear problem which is based on the study of the linear equation.

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