Macaulay2 » Documentation
Packages » Permutations :: isVexillary
next | previous | forward | backward | up | index | toc

isVexillary -- whether a permutation is vexillary

Description

A permutation $p$ is vexillary if it is $2143$-avoiding.

i1 : p = permutation {3,1,2,5,4}

o1 = Permutation{3, 1, 2, 5, 4}

o1 : Permutation
i2 : isVexillary p

o2 = false

Acknowledgement

This method was ported over from the MatrixSchubert (missing documentation) package.

See also

Ways to use isVexillary:

  • isVexillary(Permutation)

For the programmer

The object isVexillary is a method function.


The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Permutations/Documentation/patternAvoidanceDocs.m2:179:0.