Require Logic.PropositionalLogic.DeepEmbedded.PropositionalLanguage.
Require Logic.PropositionalLogic.DeepEmbedded.ProofTheories.
Require Logic.PropositionalLogic.DeepEmbedded.KripkeSemantics.
Local Open Scope logic_base.
Local Open Scope syntax.
Local Open Scope kripke_model.
Local Open Scope kripke_model_class.
Section Complete.
Context {Sigma: PropositionalLanguage.PropositionalVariables}
{CV: Countable PropositionalLanguage.Var}.
Existing Instances PropositionalLanguage.L PropositionalLanguage.minL PropositionalLanguage.pL.
Existing Instances KripkeSemantics.MD KripkeSemantics.kMD KripkeSemantics.R KripkeSemantics.SM KripkeSemantics.kminSM KripkeSemantics.kpSM.
Section General_Completeness.
Context {Gamma: ProofTheory PropositionalLanguage.L}.
Definition cP : context -> Prop := Intersection _ (Intersection _ derivable_closed orp_witnessed) consistent.

Lemma AL_DC: at_least derivable_closed cP.
Definition canonical_frame: KripkeSemantics.frame :=
KripkeSemantics.Build_frame (sig cP) (fun a b => Included _ (proj1_sig a) (proj1_sig b)).