Hive-type polytopes for quiver multiplicities and the membership problem for quiver moment cones

Calin Chindris, Brett Collins, Daniel Kline

Let $Q$ be a bipartite quiver with vertex set $Q_0$ such that the number of arrows between any source vertex and any sink vertex is constant. Let $\beta =(\beta (x){)}_{x\in Q_0}$ be a dimens…