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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 Polar set (potential theory) ： ウィキペディア英語版 Polar set (potential theory) In mathematics, in the area of classical potential theory, polar sets are the "negligible sets", similar to the way in which sets of measure zero are the negligible sets in measure theory. == Definition == A set $Z$ in $\backslash R^n$ (where $n\backslash ge\; 2$) is a polar set if there is a non-constant subharmonic function :$u$ on $\backslash R^n$ such that :$Z\; \backslash subseteq\; \backslash .$ Note that there are other (equivalent) ways in which polar sets may be defined, such as by replacing "subharmonic" by "superharmonic", and $-\backslash infty$ by $\backslash infty$ in the definition above. 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「Polar set (potential theory)」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.