Theorems · Theorem · number theory
four_pos
∀ {α : Type u_1} [inst : AddMonoidWithOne α] [inst_1 : PartialOrder α] [ZeroLEOneClass α] [NeZero 1] [AddLeftMono α],
0 < 4Alias of zero_lt_four.
See zero_lt_four' for a version with the type explicit.
- Defined in
- Mathlib.Algebra.Order.Monoid.NatCast
- Cited by
- 5 results in Mathlib
- Foundations
- Depth 23 from the axioms · uses propext
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.
- PartialOrderstatement · cited by 6,410
- AddLeftMonostatement · cited by 687
- AddMonoidWithOnestatement · cited by 313
- ZeroLEOneClassstatement · cited by 304
- zero_lt_fourproof · cited by 8
Cited by5
Results whose statement or proof uses this declaration.
- Bertrand.real_main_inequalityproof · cited by 1
- primorial_lt_four_powproof · cited by 1
- strictConcaveOn_sqrt_mul_log_Ioiproof · cited by 1
- WeierstrassCurve.natDegree_Ψ₃_posproof · cited by 1
- RootPairing.coxeterWeightIn_le_fourproof · cited by 1