Minimum Spanning Tree Cycle Intersection Problem

Abstract

Consider a connected graph $G$ and let $T$ be a spanning tree of $G$. Every edge $e\in G-T$ induces a cycle in $T\cup \{e\}$. The intersection of two distinct such cycles is the set of edges of $T$ that belong to both cycles. We consider the problem of finding a spanning tree that has the least number of such non-empty intersections.