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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Kellogg's theorem ： ウィキペディア英語版 Kellogg's theorem Kellogg's theorem is a pair of related results in the mathematical study of the regularity of harmonic functions on sufficiently smooth domains by Oliver Dimon Kellogg. In the first version, it states that, for $k\; \backslash geq\; 2$, if the domain's boundary is of class $C^k$ and the ''k''-th derivatives of the boundary are Dini continuous, then the harmonic functions are uniformly $C^k$ as well. The second, more common version of the theorem states that for domains which are $C^$, if the boundary data is of class $C^$, then so is the harmonic function itself. Kellogg's method of proof analyzes the representation of harmonic functions provided by the Poisson kernel, applied to an interior tangent sphere. In modern presentations, Kellogg's theorem is usually covered as a specific case of the boundary Schauder estimates for elliptic partial differential equations. ==See also== *Schauder estimates 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kellogg's theorem」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.