Prove2Me

lean_workbook_plus_67386

Proved

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

  1. ⌊x+2⌋=−2\lfloor x+2\rfloor=-2 (and so x∈[−4,−3)x\in[-4,-3)
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_67386 (x : ℝ) (hx : ⌊x + 2⌋ = -2) : x ∈ Set.Icc (-4) (-3)   :=  by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook

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