lean_workbook_plus_57637
ProvedProve the inequality for the real numbers .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_57637 (n : ℕ) (x : Fin n → ℝ) : |∑ i, x i| ≤ ∑ i, |x i| := by sorry
Source
Prove the inequality for the real numbers .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_57637 (n : ℕ) (x : Fin n → ℝ) : |∑ i, x i| ≤ ∑ i, |x i| := by sorry