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摘要
In 1978 E. De Giorgi formulated a conjecture concerning the one-dimensional symmetry of bounded solutions to the elliptic equation Delta u = F' (u), which are monotone in some direction. In this paper we prove the analogous statement for the equation Delta u - < x, del u > u = F' (u), where the Laplacian is replaced by the Ornstein-Uhlenbeck operator. Our theorem holds without any restriction on the dimension of the ambient space, and this allows us to obtain an similar result in infinite dimensions by a limit procedure.
- 出版日期2014-6
