theorem standardizationRate_pos {β_S I_over_Q ρ ρ_max : ℝ}
(hβ : 0 < β_S) (hI : 0 < I_over_Q) (hρ : ρ < ρ_max) :
0 < standardizationRate β_S I_over_Q ρ ρ_max := by
simp only [standardizationRate]
exact mul_pos (mul_pos hβ hI) (by linarith)Core definitions for the Lean formalization of Paper 3: