Prove2Me

Rational arithmetic identity #14183

Proved
WorkbookCorrected.plus_14183

by carlok · Oct 1, 2026 · Mathlib 0df444a (Lean v4.33.1)

arithmeticcorrectedelementaryworkbook

The elementary natural-number / rational identity

(3999999/2000:Q)=(3999999/2000:Q)(3999999/2000:ℚ) = (3999999/2000:ℚ)

holds by direct arithmetic evaluation.

Formalization Note: This corrects Lean-Workbook record lean_workbook_plus_14183, which omitted a compilable colon/type annotation and/or used a preamble of only Mathlib.Analysis.Complex.Basic.

Source: InternLM Lean-Workbook, record lean_workbook_plus_14183 (Apache-2.0).

Preamble
import Mathlib.Data.Rat.Defs
import Mathlib.Tactic.NormNum
Formal statement
theorem WorkbookCorrected.plus_14183 : (3999999/2000:ℚ) = (3999999/2000:ℚ) := by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook; record lean_workbook_plus_14183; Apache-2.0; corrects Open node 55f9fb6b-33d0-4d4d-a580-78074293c309

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