Theorems · Theorem · order theory
hnot_hnot_hnot
∀ {α : Type u_2} [inst : CoheytingAlgebra α] (a : α), ￢￢￢a = ￢a- Defined in
- Mathlib.Order.Heyting.Basic
- Cited by
- 3 results in Mathlib
- Foundations
- Depth 13 from the axioms · uses propext, Quot.sound
- Assumes
- CoheytingAlgebra
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites5
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- LE.le.antisymm'proof · cited by 104
- CoheytingAlgebrastatement and proof · cited by 96
- HNot.hnotstatement and proof · cited by 83
- hnot_antiproof · cited by 7
- hnot_hnot_leproof · cited by 4
Cited by3
Results whose statement or proof uses this declaration.
- codisjoint_hnot_hnot_left_iffproof · cited by 1
- codisjoint_hnot_hnot_right_iffproof · cited by 0
- Coheyting.boundary_hnot_hnotproof · cited by 0