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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 Characteristic variety ： ウィキペディア英語版 Characteristic variety In mathematical analysis, the characteristic variety of a microdifferential operator ''P'' is an algebraic variety that is the zero set of the principal symbol of ''P'' in the cotangent bundle. It is invariant under a quantized contact transformation. The notion is also defined more generally in commutative algebra. A basic theorem says a characteristic variety is involutive. == References == * M. Sato, T. Kawai, and M. Kashiwara: Microfunctions and Pseudo-differential Equations. Lecture note in Math., No. 287, Springer, Berlin-Heidelberg-New York, pp. 265–529 (1973) 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「Characteristic variety」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.