fact: Definition mulℝ_proper := λ"eqx" λ"eqy" λ"ε₁" λ"ε₂" λ"q₁" λ"q₂" λ"XY₁" λ"XY₂" "XY₁" @ λ"ε'₁" λ"ε''₁" λ"q'₁" λ"q''₁" λ"X₁" λ"Y₁" "XY₂" @ λ"ε'₂" λ"ε''₂" λ"q'₂" λ"q''₂" λ"X₂" λ"Y₂" ("eqx" @ "ε'₁" @ "ε'₂" @ "q'₁" @ "q'₂" @ "X₁" @ "X₂") @ ("eqy" @ "ε''₁" @ "ε''₂" @ "q''₁" @ "q''₂" @ "Y₁" @ "Y₂").
imports: QArith Psatz ClassicalRealizability.Kbase ClassicalRealizability.Rationals ClassicalRealizability.Real_definitions ClassicalRealizability.Real_relations