lean_workbook_plus_28838
ProvedPreamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_28838 (x : ℤ) : ∃ y, y = x^2 - 1 := by sorry
Source
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_28838 (x : ℤ) : ∃ y, y = x^2 - 1 := by sorry