fact: Definition Rle_antisym := λ"Lexy" λ"Leyx" λ"ε₁" λ"ε₂" λ"q₁" λ"q₂" λ"X" λ"Y" ("Lexy" @ "ε₁" @ "ε₂" @ "q₁" @ "q₂" @ "X" @ "Y") @ ("Leyx" @ "ε₂" @ "ε₁" @ "q₂" @ "q₁" @ "Y" @ "X").
imports: QArith Psatz ClassicalRealizability.Kbase ClassicalRealizability.Rationals ClassicalRealizability.Real_definitions