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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 Seshadri constant ： ウィキペディア英語版 Seshadri constant In algebraic geometry, a Seshadri constant is an invariant of an ample line bundle ''L'' at a point ''P'' on an algebraic variety. It was introduced by Demailly to measure a certain ''rate of growth'', of the tensor powers of ''L'', in terms of the jets of the sections of the ''L''''k''. The object was the study of the Fujita conjecture. The name is in honour of the Indian mathematician C. S. Seshadri. It is known that Nagata's conjecture on algebraic curves is equivalent to the assertion that for more than nine general points, the Seshadri constants of the projective plane are maximal. There is a general conjecture for algebraic surfaces, the Nagata–Biran conjecture. ==References== *Robert Lazarsfeld, ''Positivity in Algebraic Geometry I: Classical Setting'' (2004), pp. 269–70 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「Seshadri constant」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.