A directed hypergraph with an edge `[({1, 2}, {3, 4})]` should become $[-1, -1, 1, 1]^T$ as an incidence matrix. This is related to Issue #378.
A directed hypergraph with an edge$[-1, -1, 1, 1]^T$ as an incidence matrix. This is related to Issue #378.
[({1, 2}, {3, 4})]should become