fact: Definition QsubMSasQ (a b : Q) (m : QsubMS a b) : Q.
imports: ssreflect CSetoids CSetoidFun CFields CPolynomials Program Omega Equivalence Morphisms Wf Morphisms CRings CRing_Homomorphisms Rational Setoid CPoly_NthCoeff CPoly_Degree CReals Intervals CauchySeq IntervalFunct MoreIntervals MoreFunctions Composition seq bigopsClass Structures ProductMetric CRIR Integration Qmetric QposMinMax QMinMax iso_CReals