fact: Definition interpolate (p : 'rV[{poly R}]_d) := rVpoly (p *m invmx (vandmx d)).
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq div fintype tuple) mathcomp(finfun bigop fingroup perm ssralg zmodp matrix mxalgebra) mathcomp(poly polydiv mxpoly)