Theorem: LO.Modal.Standard.Kripke.iff_definability_memAxiomSetFrameClass (Logic/Modal/Standard/Kripke/Semantics.lean)

State before:
α : Type u_1
Ax : AxiomSet α
P : FrameProperty
definability : Definability Ax P
⊢ ∀ {F : Frame' α}, F ∈ 𝔽(Ax) ↔ P F
Tactic:
apply definability.defines
State after:
no goals