fact: Definition zchinese r1 r2 := r1 * m2 * (egcdz m1 m2).2 + r2 * m1 * (egcdz m1 m2).1.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime order) mathcomp(ssralg poly ssrnum ssrint archimedean rat matrix) mathcomp(polydiv perm zmodp mxalgebra vector)