V2EX young diagram

Young Diagram

Definition / 释义

Young diagram(杨图):组合数学与表示论中的一种图形表示,用一组左对齐的方格行来表示一个整数分拆(partition)。每一行的方格数按从上到下不增排列。常用于研究对称群表示、杨表(Young tableau)与舒尔函数等。

Pronunciation / 发音

/j darm/

Examples / 例句

A Young diagram represents a partition of an integer.
杨图用来表示一个整数的分拆。

Using the Young diagram, we can describe the shape of a tableau and study representations of the symmetric group.
借助杨图,我们可以描述杨表的形状,并研究对称群的表示。

Etymology / 词源

“Young diagram”得名于英国数学家 Alfred Young(阿尔弗雷德杨)。他在研究对称群与其表示时,引入并系统发展了用方格图形表达分拆与相关构造的方法,因此该图形以其姓氏命名。

Related Words / 相关词

Literary Works / 文学作品

  • Young Tableaux: With Applications to Representation Theory and Geometry(William Fulton):系统讲解杨图、杨表及其在表示论与几何中的应用。
  • The Symmetric Group: Representations, Combinatorial Algorithms, and Symmetric Functions(Bruce E. Sagan):多处使用“Young diagram/Young tableau”作为核心工具。
  • Representation Theory of the Symmetric Groups(Gordon James & Adalbert Kerber):以杨图与相关构造为对称群表示论的重要语言。
  • Symmetric Functions and Hall Polynomials(I. G. Macdonald):在对称函数理论语境中频繁涉及杨图与分拆记号。
  • Enumerative Combinatorics, Volume 2(Richard P. Stanley):在分拆与杨表相关章节中使用杨图(Young diagram)作为基本对象。
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