import Mathlib /- Original: m ≥ 0, we multiply the equation for m by m2− , with m− = max(0, −m) and integrate in space and time -/ theorem eq_250c08e8451f986b (by : ℕ) (equation : ℕ) (for : ℕ) (integrate : ℕ) (m : ℕ) (m2 : ℕ) (multiply : ℕ) (space : ℕ) (the : ℕ) (time : ℕ) (we : ℕ) : m ≥ 0, we multiply the equation for m by m2- , with m- = max(0, -m) ∧ integrate in space and time := by omega