lean_workbook_plus_333
ProvedIf then or
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_333 (c : ℂ) (f : ℂ → ℂ) (hf: f c = 0) (h : c * (c + 1) = 0) : c = 0 ∨ c = -1 := by sorry
Source
If then or
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_333 (c : ℂ) (f : ℂ → ℂ) (hf: f c = 0) (h : c * (c + 1) = 0) : c = 0 ∨ c = -1 := by sorry