Theorems · Theorem · real analysis
Real.arctan_eq_neg_pi_div_four
∀ {x : ℝ}, Real.arctan x = -(Real.pi / 4) ↔ x = -1- Cited by
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- Foundations
- Depth 208 from the axioms · uses propext, Classical.choice, Quot.sound
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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.arctanstatement · cited by 111
- Real.arctan_oneproof · cited by 7
- Real.arctan_negproof · cited by 6
- Real.arctan_injectiveproof · cited by 4
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