lean_workbook_plus_470

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

Find the sum of the infinite arithmetic series $0+0+0+0...$ when $a=0$ and $d=0$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_470 (a d : ℝ) (h : a = 0 ∧ d = 0) : ∑' i : ℕ, (a + i * d) = 0   :=  by sorry

Source