Mathlib Map

Theorems · Theorem · logic and foundations

FirstOrder.Language.Theory.models_iff_not_satisfiable

∀ {L : FirstOrder.Language} {T : L.Theory} (φ : L.Sentence),
  T ⊨ᵇ φ ↔ ¬(T ∪ {FirstOrder.Language.Formula.not φ}).IsSatisfiable
Defined in
Mathlib.ModelTheory.Satisfiability
Cited by
4 results in Mathlib
Foundations
Depth 28 from the axioms · uses propext, Classical.choice, Quot.sound

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

Cites18

Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.

Cited by4

Results whose statement or proof uses this declaration.