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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 Landau prime ideal theorem ： ウィキペディア英語版 Landau prime ideal theorem In algebraic number theory, the prime ideal theorem is the number field generalization of the prime number theorem. It provides an asymptotic formula for counting the number of prime ideals of a number field ''K'', with norm at most ''X''. ==Example== What to expect can be seen already for the Gaussian integers. There for any prime number ''p'' of the form 4''n'' + 1, ''p'' factors as a product of two Gaussian primes of norm ''p''. Primes of the form 4''n'' + 3 remain prime, giving a Gaussian prime of norm ''p''2. Therefore we should estimate :$2r(X)+r^\backslash prime(\backslash sqrt)$ where ''r'' counts primes in the arithmetic progression 4''n'' + 1, and ''r''′ in the arithmetic progression 4''n'' + 3. By the quantitative form of Dirichlet's theorem on primes, each of ''r''(''Y'') and ''r''′(''Y'') is asymptotically :$\backslash frac.$ Therefore the 2''r''(''X'') term predominates, and is asymptotically :$\backslash frac.$ 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「Landau prime ideal 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.