fact: Definition oclause_neq_leq_elim oc := flatten (map oclause_neq_elim (oclause_leq_elim oc)).
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq div choice fintype) mathcomp(bigop order ssralg finset fingroup zmodp) mathcomp(poly ssrnum)