fact: Definition ACmodulus : AC -> AR := fun z => ARsqrt (fst z*fst z + snd z*snd z).
imports: CoRN.algebra.RSetoid CoRN.metric2.Metric CoRN.metric2.UniformContinuity Coq.QArith.Qabs CoRN.model.metric2.Qmetric CoRN.metric2.ProductMetric CoRN.model.totalorder.QposMinMax CoRN.model.totalorder.QMinMax CoRN.reals.faster.ARabs CoRN.reals.faster.ARroot CoRN.reals.faster.ARArith