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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 Uniform boundedness principle ： ウィキペディア英語版 Uniform boundedness principle In mathematics, the uniform boundedness principle or Banach–Steinhaus theorem is one of the fundamental results in functional analysis. Together with the Hahn–Banach theorem and the open mapping theorem, it is considered one of the cornerstones of the field. In its basic form, it asserts that for a family of continuous linear operators (and thus bounded operators) whose domain is a Banach space, pointwise boundedness is equivalent to uniform boundedness in operator norm. The theorem was first published in 1927 by Stefan Banach and Hugo Steinhaus but it was also proven independently by Hans Hahn. ==Theorem== Theorem (Uniform Boundedness Principle). Let ''X'' be a Banach space and ''Y'' be a normed vector space. Suppose that ''F'' is a collection of continuous linear operators from ''X'' to ''Y''. If for all ''x'' in ''X'' one has : then : 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「Uniform boundedness principle」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.