fact: Definition Eeq_sym := λ"eq" λ"ε" λ"q" λ"f" ("f" @ ("eq" @ "ε" @ "q" @ ff) @ ("eq" @ "ε" @ "q" @ tt)).
imports: QArith Psatz ClassicalRealizability.Kbase ClassicalRealizability.Rationals ClassicalRealizability.Real_definitions