fact: Definition hemi_comp_graph_eqb (h1 h2 : hemi_comp_graph) := (part h1 == part h2) && (border h1 == border h2).
imports: mathcomp(all_ssreflect ssralg fingroup zmodp poly ssrnum) mathcomp(matrix perm) ssr_ext ssralg_ext fdist subgraph_partition tanner