谱半径
矩阵谱半径
定义
设A是n × n矩阵，λ1, ..., λn是其特征值，則A的谱半径ρ(A)定義如下：
ρ(A)=max{|λ1|,⋯,|λn|}.{displaystyle rho (A)=max left{|lambda _{1}|,cdots ,|lambda _{n}|right}.}
即矩阵A的谱半径等于矩阵A的特征值绝对值的最大值。
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Y
This article is about the letter of the alphabet. For other uses, see Y (disambiguation). See also: Wye (disambiguation) Y Y y (See below) Usage Writing system Latin script Type Alphabetic and Logographic Language of origin Latin language Phonetic usage [ y ] [ ɨ ] [ j ] [ iː ] [ ɪ ] [ ɘ ] [ ə ] [ ɯ ] [ ɛː ] [ j ] [ ɥ ] [ ɣ̟ ] / w aɪ / / aɪ / Unicode value U+0059, U+0079 Alphabetical position 25 History Development Υ υ 𐌖 Y y Time period 54 to present Descendants • U • V • W • Ỿ • ¥ • Ꮙ • Ꮍ • Ꭹ Sisters F Ѵ У Ў Ұ Ү ו و ܘ וּ וֹ ࠅ 𐎆 𐡅 ወ વ ૂ ુ उ Variations (See below) Other Other letters commonly used with y(x), ly, ny This article contains IPA phonetic symbols. Without proper rendering support, you may see question marks, boxes, or other symbols instead of Unicode characters. For an introductory guide on IPA symbols, see Help:IPA. ISO basic Latin alphabet Aa Bb Cc D...
