fact: Definition INZ (n:N) : R := match n with | N0 => IZR 0%Z | Npos p => IZR (Zpos p) end.
imports: OrderedRing QMicromega RingMicromega Refl Sumbool Raxioms Rfunctions RIneq Rpow_def QArith Qfield Qreals DeclConstant EnvRing