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arXiv 1606.08601math.AP
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关于二阶抛物型算子热核的等价性

On the Equivalence of Heat Kernels of Second-order parabolic operators

Debdip Ganguly, Yehuda Pinchover

摘要:

设$P$是定义在非紧黎曼流形$M$上的二阶、对称、非负椭圆算子,$V$是关于$M$中$P$的热核的{ \em小扰动势}类的实值函数.我们证明了在进一步的假设下(满足大类的$P$和$M$),$P-V$和$P$在$M$上的正极小热核是等价的.此外,抛物型Martin边界在这种扰动下是稳定的,相应的抛物型方程的所有非负解的锥是仿射同胚的

英文摘要:

Let $P$ be a second-order, symmetric, and nonnegative elliptic operator with real coefficients defined on noncompact Riemannian manifold $M$, and let $V$ be a real valued function which belongs to the class of {\em small perturbation potentials} with respect to the heat kernel of $P$ in $M$. We prove that under some further assumptions (satisfying by a large classes of $P$ and $M$) the positive minimal heat kernels of $P-V$ and of $P$ on $M$ are equivalent. Moreover, the parabolic Martin boundary is stable under such perturbations, and the cones of all nonnegative solutions of the corresponding parabolic equations are affine homeomorphic

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