vexillary permutation

短语

词形变化

vexillary permutations 复数

释义与例句

n.
  1. 1.

    A permutation μ of the positive integers containing no subpermutation isomorphic to the permutation (2143); in other words, there do not exist four numbers i < j < k < l with μ(j) < μ(i) < μ(l) < μ(k).

    数学

词源

So called because they are related to flags of modules.

来源：wiktionary