%0 Journal Article
%T Contraction and restriction of positroids in terms of decorated permutations
%A Suho Oh
%J Mathematics
%D 2008
%I arXiv
%X A positroid is a matroid defined by Postnikov to study the cells in the non-negative part of the Grassmannian. They are in bijection with decorated permutations. We show a way to explain contraction and restriction of positroids in terms of decorated permutations.
%U http://arxiv.org/abs/0804.0882v3