fact: Definition QuotientCSetoid_is_CPsMetricSpace (X : CPsMetricSpace) := Build_is_CPsMetricSpace (Metric_CSetoid X) (Metric_d X) ( Metric_d_com X) (Metric_d_nneg X) (Metric_d_pos_imp_ap X) (Metric_d_tri_ineq X).
imports: CoRN.metrics.Prod_Sub CoRN.metrics.Equiv