A geometric proof of an equivariant Pieri rule for flag manifolds
Changzheng Li, Vijay Ravikumar, Frank Sottile, Mingzhi Yang·2018-09-12·via math.CO updates on arXiv.org
We use geometry to give a short proof of an equivariant Pieri rule in the classical flag manifold. This rule is due to Robinson, who gave an algebraic proof.