∫ Утверждение Mathlib
isUniversal_symmetric
Mathlib.ModelTheory.Complexity
URI: https://scilib.ai/kg/mathlib#FirstOrder.Language.Relations.isUniversal_symmetric
∫ Утверждение Mathlib
Mathlib.ModelTheory.Complexity
URI: https://scilib.ai/kg/mathlib#FirstOrder.Language.Relations.isUniversal_symmetric