fact: Definition w_to_oclause (t : seq (term R) * seq (term R)) := Oclause t.1%PAIR [::] t.2%PAIR [::].
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)