dblXYZ — Mathlib

English

The triple of coordinates for 2P on a Weierstrass Jacobian is formed by applying the three coordinate functions to P: (dblX P, dblY P, dblZ P).

Русский

Координаты 2P на криваяобразной кривой заданы как тройка (dblX P, dblY P, dblZ P).

LaTeX

$$$\\mathrm{dblXYZ}(P) = (\\mathrm{dblX}(P), \\mathrm{dblY}(P), \\mathrm{dblZ}(P))$$$

Lean4

/-- The coordinates of a representative of `2 • P` for a Jacobian point representative `P` on a
Weierstrass curve. -/
noncomputable def dblXYZ (P : Fin 3 → R) : Fin 3 → R :=
  ![W'.dblX P, W'.dblY P, W'.dblZ P]

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