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Asymptotics of solutions of second order parabolic equations near conical points and edges

机译:锥点和边附近的二阶抛物方程的解的渐近性

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The authors consider the first boundary value problem for a second order parabolic equation with variable coefficients in a domain with conical points or edges. In the first part of the paper, they study the Green function for this problem in the domain K × R n − m , where K is an infinite cone in R m , 2 ≤ m ≤ n . They obtain the asymptotics of the Green function near the vertex ( n = m ) and edge ( n m ), respectively. This result is applied in the second part of the paper, which deals with the initial-boundary value problem in this domain. Here, the right-hand side f of the differential equation belongs to a weighted L p space. At the end of the paper, the initial-boundary value problem in a bounded domain with conical points or edges is studied.
机译:作者考虑了具有圆锥形点或边的域中具有可变系数的二阶抛物方程的第一边值问题。在本文的第一部分中,他们研究了在域K×R n-m中该问题的格林函数,其中K是R m中的无限锥,2≤m≤n。它们分别获得顶点(n = m)和边缘(n> m)附近的Green函数的渐近性。该结果将在本文的第二部分中应用,该部分处理该域中的初始边界值问题。在此,微分方程的右侧f属于加权的L p空间。最后,研究了具有圆锥形点或边的有界域中的初边值问题。

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