Theorems · Theorem · complex analysis
Complex.two_cos
∀ (x : ℂ), 2 * Complex.cos x = Complex.exp (x * Complex.I) + Complex.exp (-x * Complex.I)
- Defined in
- Mathlib.Analysis.Complex.Trigonometric
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 143 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites6
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Complexstatement and proof · cited by 5,565
- Complex.Istatement and proof · cited by 866
- Complex.expstatement and proof · cited by 612
- Complex.cosstatement · cited by 279
- two_ne_zeroproof · cited by 251
- mul_div_cancel₀proof · cited by 77
Cited by2
Results whose statement or proof uses this declaration.
- Complex.cosh_mul_Iproof · cited by 11
- Polynomial.Chebyshev.sumZeroes_T_of_not_dvdproof · cited by 1