fact: Definition archi_bound {R : ArchiNumDomain.type} (x : R) := (Def.trunc `|x|).+1.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)