lean_workbook_plus_81836
ProvedBut .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_81836 (n : ℕ) (x : Fin n → ℝ) : ∑ i, ‖x i‖ ≥ ‖∑ i, x i‖ := by sorry
Source
But .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_81836 (n : ℕ) (x : Fin n → ℝ) : ∑ i, ‖x i‖ ≥ ‖∑ i, x i‖ := by sorry