arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1612.02450math.AP
收藏

空间分数阶微分方程Neumann边值问题的适定性

Wellposedness of Neumann boundary-value problems of space-fractional differential equations

Hong Wang, Danping Yang

摘要:

分数阶微分方程(FDE)提供了一个准确的描述传输过程,表现出异常扩散,但引入了新的数学困难,没有遇到的情况下,整数阶微分方程。例如,一维变系数FDE的Dirichlet边值问题的适定性还没有完全解决。此外,Neumann边值问题的FDE提出了显着的挑战,部分原因是不同形式的FDE和不同类型的Neumann边界条件已经提出了在文献中根据不同的应用。我们进行了初步的数学分析不同的Neumann边值问题的FDES的适定性。我们证明了五个三种不同形式的FDES,封闭的三种类型的诺依曼边界条件的九种组合是适定性的,其余四个不承认一个解决方案。特别地,对于FDE的每种形式,存在至少一种类型的Neumann边界条件使得对应的边值问题适定,但是也存在至少一种类型的Neumann边界条件使得对应的边值问题不适定。这充分说明了FDE研究的精妙之处。

英文摘要:

Fractional differential equation (FDE) provides an accurate description of transport processes that exhibit anomalous diffusion but introduces new mathematical difficulties that have not been encountered in the context of integer-order differential equation. For example, the wellposedness of the Dirichlet boundary-value problem of one-dimensional variable-coefficient FDE is not fully resolved yet. In addition, Neumann boundary-value problem of FDE poses significant challenges, partly due to the fact that different forms of FDE and different types of Neumann boundary condition have been proposed in the literature depending on different applications. We conduct preliminary mathematical analysis of the wellposedness of different Neumann boundary-value problems of the FDEs. We prove that five out of the nine combinations of three different forms of FDEs that are closed by three types of Neumann boundary conditions are well posed and the remaining four do not admit a solution. In particular, for each form of the FDE there is at least one type of Neumann boundary condition such that the corresponding boundary-value problem is well posed, but there is also at least one type of Neumann boundary condition such that the corresponding boundary-value problem is ill posed. This fully demonstrates the subtlety of the study of FDE.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑