Theorem: LO.Modal.Standard.Kripke.CanonicalModel.val_def (Logic/Modal/Standard/Kripke/Completeness.lean)

State before:
α : Type u_1
inst✝³ : DecidableEq α
inst✝² : Inhabited α
L : DeductionParameter α
inst✝¹ : L.Normal
inst✝ : Inhabited (MCT L)
Ω : (CanonicalModel L).Frame.World
a : α
⊢ (CanonicalModel L).Valuation Ω a ↔ atom a ∈ Ω.theory
Tactic:
rfl
State after:
no goals