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Strong dissipativity of generalized time-fractional derivatives and quasi-linear (stochastic) partial differential equations
Journal of Functional Analysis ( IF 1.7 ) Pub Date : 2021-06-07 , DOI: 10.1016/j.jfa.2021.109135
Wei Liu , Michael Röckner , José Luís da Silva

In this paper strong dissipativity of generalized time-fractional derivatives on Gelfand triples of properly in time weighted Lp-path spaces is proved. In particular, as special cases the classical Caputo derivative and other fractional derivatives appearing in applications are included. As a consequence one obtains the existence and uniqueness of solutions to evolution equations on Gelfand triples with generalized time-fractional derivatives. These equations are of typeddt(ku)(t)+A(t,u(t))=f(t),0<t<T, with (in general nonlinear) operators A(t,) satisfying general weak monotonicity conditions. Here k is a non-increasing locally Lebesgue-integrable nonnegative function on [0,) with limsk(s)=0. Analogous results for the case, where f is replaced by a time-fractional additive noise, are obtained as well. Applications include generalized time-fractional quasi-linear (stochastic) partial differential equations. In particular, time-fractional (stochastic) porous medium and fast diffusion equations with ordinary or fractional Laplace operators and the time-fractional (stochastic) p-Laplace equation are covered.



中文翻译:

广义时间分数阶导数和拟线性(随机)偏微分方程的强耗散性

在本文中,时间加权的 Gelfand 三元组上广义时间分数导数的强耗散性 -path 空间被证明。特别是,作为特殊情况,经典的 Caputo 导数和应用中出现的其他分数导数都包括在内。因此,我们获得了具有广义时间分数阶导数的 Gelfand 三元组上演化方程解的存在性和唯一性。这些方程是类型dd()()+一种(,())=F(),0<<, 使用(一般为非线性)运算符 一种(,)满足一般弱单调性条件。这里k是一个非递增的局部 Lebesgue 可积非负函数[0,)()=0. 对于f被时间分数加性噪声代替的情况,也获得了类似的结果。应用包括广义时间分数准线性(随机)偏微分方程。特别是,涵盖了具有普通或分数拉普拉斯算子的时间分数(随机)多孔介质和快速扩散方程以及时间分数(随机)p-拉普拉斯方程。

更新日期:2021-06-15
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