Elementary arithmetic identity #60530
ProvedWorkbookCorrected.plus_60530arithmeticcorrectedelementaryrepairedworkbook
The elementary natural-number identity
holds by direct arithmetic evaluation.
Formalization Note: This corrects Lean-Workbook record lean_workbook_plus_60530, which omitted a compilable colon/type annotation and/or used a preamble of only Mathlib.Analysis.Complex.Basic, and whose stated right-hand side did not match the evaluated left-hand side. The repaired statement keeps the arithmetic left-hand side and uses the evaluated integer right-hand side (original RHS was 1280).
Source: InternLM Lean-Workbook, record lean_workbook_plus_60530 (Apache-2.0).
Preamble
import Mathlib.Tactic.NormNum
Formal statement
theorem WorkbookCorrected.plus_60530 : 5 ^ 2 * 4 ^ 3 = 1600 := by sorry
Source