## The Strength of Multi-row Aggregation Cuts for Sign-pattern Integer Programs

In this paper, we study the strength of aggregation cuts for sign-pattern integer programs (IPs). Sign-pattern IPs are a generalization of packing IPs and are of the form {x \in Z^n | Ax = 0} where for a given column j, A_{ij} is either non-negative for all i or non-positive for all i. Our first … Read more