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arXiv 2203.09576math.PR
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具有Nemytskii型系数的McKean-Vlasov SDE的强解:时间依赖情形

Strong solutions to McKean-Vlasov SDEs with coefficients of Nemytskii-type: the time-dependent case

Sebastian Grube

AI总结:

本文研究了具有时间与空间依赖Nemytskii型系数的非线性FPKE,证明了其对应的McKean-Vlasov SDE存在唯一强解,且其弱解可表示为驱动Brown运动的泛函。

摘要:

我们考虑一大类具有显式依赖于时间和空间的Nemytskii型系数的非线性FPKE,已知其存在在L^1和L^∞中充分Sobolev正则的分布解u。我们证明,存在唯一的具有时间边际律密度u的相应McKean-Vlasov SDE强解。特别地,该方程的每个具有时间边际律密度u的弱解都可以写成驱动Brown运动的泛函。此外,将任何Brown运动代入该泛函都会产生具有时间边际律密度u的弱解。

英文摘要:

We consider a large class of nonlinear FPKEs with coefficients of Nemytskii-type depending explicitly on time and space, for which it is known that there exists a sufficiently Sobolev-regular distributional solution u in L^1 and L^\infty. We show that there exists a unique strong solution to the associated McKean-Vlasov SDE with time marginal law densities u. In particular, every weak solution of this equation with time marginal law densities u can be written as a functional of the driving Brownian motion. Moreover, plugging any Brownian motion into this very functional produces a weak solution with time marginal law densities u.

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。

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