fact: Definition oppℝ_Total := λ"Tx" λ"ε" "Tx" @ "ε" @ (λ"q" λ"X" λ"f" ℚopp @ "q" @ "f" @ "X").
imports: QArith Psatz ClassicalRealizability.Kbase ClassicalRealizability.Rationals ClassicalRealizability.Real_definitions ClassicalRealizability.Real_relations