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arXiv 0912.2193math.PRmath.AP
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半线性散度型抛物障碍问题的反射倒向边值问题和连续解

Reflected BSDEs and continuous solutions of parabolic obstacle problem for semilinear PDEs in divergence form

Tomasz Klimsiak

摘要:

考虑带障碍物的散度型半线性抛物型方程的Cauchy问题。我们表明,在自然条件下的右手边的方程和温和的条件下的障碍,一个唯一的连续的解决方案的问题承认一个随机表示的反射向后随机微分方程。我们还得到了解的一些正则性,并证明了一些有用的逼近结果。

英文摘要:

We consider the Cauchy problem for semilinear parabolic equation in divergence form with obstacle. We show that under natural conditions on the right-hand side of the eqution and mild conditions on the obstacle a unique continuous solution of the problem admits a stochastic representation in terms of reflected backward stochastic differential equations. We derive also some regularity properties of so- lutions and prove useful approximation results.

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