V2EX symmetric function

Symmetric Function

定义 Definition

对称函数:在数学中,指当交换(置换)自变量的顺序时,函数值保持不变的函数。常见于代数、组合数学与对称多项式理论中(例如基本对称函数、幂和对称函数等)。

发音 Pronunciation (IPA)

/smtrk fkn/

例句 Examples

A symmetric function does not change when you swap its variables.
对称函数在交换变量后不会改变其值。

In algebraic combinatorics, symmetric functions encode rich information about partitions, tableaux, and representations.
在代数组合学中,对称函数能编码有关分拆、杨表以及表示理论的丰富信息。

词源 Etymology

symmetric 来自希腊语 symmetria,意为“比例协调、对称”;function 来自拉丁语 functio,意为“执行、履行(职责)”,在数学语境中逐渐固定为“输入到输出的对应关系”。合起来 symmetric function 指“具有对称性质的函数”。

相关词 Related Words

文学与经典著作中的用例 Literary Works

  • Ian G. Macdonald, Symmetric Functions and Hall Polynomials
  • Richard P. Stanley, Enumerative Combinatorics(对称函数与Schur函数相关章节)
  • William Fulton, Young Tableaux(与Schur函数、表示理论相关)
  • Bruce E. Sagan, The Symmetric Group(涉及对称群与相关对称函数思想)
  • G. E. Andrews, The Theory of Partitions(与分拆及生成函数/对称结构相关)
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