fact: Definition constraints (z : seq R) (sq : seq {poly R}) (sigma : seq int) := (\sum_(x <- z) \prod_(i < size sq) (sgz (sq`_i).[x] == sigma`_i))%N.
imports: mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice path fintype) mathcomp(div bigop order ssralg poly polydiv ssrnum perm zmodp ssrint) mathcomp(polyorder polyrcf interval matrix mxtens)