fact: Definition L0_ext_def (a b c d : Q) (Hab : (a < b)%Q) (Hcd : (c < d)%Q) (f : (QsubMS a b) -> CR) : Q_as_MetricSpace -> CR.
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