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 -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 type with (in general nonlinear) operators satisfying general weak monotonicity conditions. Here k is a non-increasing locally Lebesgue-integrable nonnegative function on with . 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 使用(一般为非线性)运算符 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 和 . 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。