subpermutation

English

Etymology

From sub- +‎ permutation.

Noun

subpermutation (plural subpermutations)

1. A permutation that is a subset of another permutation, containing only some of its elements.
   • 2016, William Adamczak, “A Note on the Structure of Roller Coaster Permutations”, in arXiv‎:

     A roller coaster permutation is described as a permutation that maximizes the total switches from ascending to descending or visa versa for the permutation and all of its subpermutations simultaneously.