Theorems · Theorem · order theory
Coheyting.hnot_hnot_sup_boundary
∀ {α : Type u_1} [inst : CoheytingAlgebra α] (a : α), ￢￢a ⊔ Coheyting.boundary a = a- Defined in
- Mathlib.Order.Heyting.Boundary
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 12 from the axioms · uses propext
- Assumes
- CoheytingAlgebra
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites8
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- CoheytingAlgebrastatement and proof · cited by 96
- HNot.hnotstatement and proof · cited by 83
- sup_eq_rightproof · cited by 53
- inf_top_eqproof · cited by 30
- Coheyting.boundarystatement · cited by 24
- sup_inf_leftproof · cited by 22
- hnot_hnot_leproof · cited by 4
- hnot_sup_selfproof · cited by 2
Cited by2
Results whose statement or proof uses this declaration.
- existsUnique_eq_principal_sup_freeproof · cited by 1
- Coheyting.sdiff_boundary_selfproof · cited by 0