Theorems · Theorem · special functions
Real.arccos_le_pi_div_two
∀ {x : ℝ}, Real.arccos x ≤ Real.pi / 2 ↔ 0 ≤ x- Cited by
- 2 results in Mathlib
- Foundations
- Depth 195 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites3
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Realstatement and proof · cited by 25,697
- Real.pistatement and proof · cited by 1,774
- Real.arccosstatement · cited by 90
Cited by2
Results whose statement or proof uses this declaration.
- Real.arccos_eq_arcsinproof · cited by 2
- InnerProductGeometry.angle_add_le_pi_div_two_of_inner_eq_zeroproof · cited by 2