English
The complex conjugate of jacobiTheta₂'' satisfies conj(jacobiTheta₂''(z,τ)) = jacobiTheta₂''(conj(z), -conj(τ)).
Русский
Комплексное сопряжение jacobiTheta₂''(z,τ) даёт conj(jacobiTheta₂''(z,τ)) = jacobiTheta₂''(conj(z), -conj(τ)).
LaTeX
$$$$\\overline{\\operatorname{jacobiTheta_2''}(z,\\tau)} = \\operatorname{jacobiTheta_2''}(\\overline{z}, -\\overline{\\tau}).$$$$
Lean4
/-- Variant of `jacobiTheta₂'` which we introduce to simplify some formulae. -/
def jacobiTheta₂'' (z τ : ℂ) : ℂ :=
cexp (π * I * z ^ 2 * τ) * (jacobiTheta₂' (z * τ) τ / (2 * π * I) + z * jacobiTheta₂ (z * τ) τ)