lean_workbook_plus_74919

Disproved

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

Show that the product of connected spaces, $[0,1]$ and $(0,1)$ , is connected.

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_74919 : IsConnected (Set.Icc 0 1 ×ˢ Set.Ioo 0 1)   :=  by sorry

Source