theorem irs_amplifies_diversity_window
(Tstar_base γ : ℝ) (hTs : 0 < Tstar_base) (hγ : 1 < γ) :
Tstar_base < irsCriticalFrictionPerp Tstar_base γ := by
unfold irsCriticalFrictionPerp
calc Tstar_base = Tstar_base * 1 := by ring
_ < Tstar_base * γ := by exact mul_lt_mul_of_pos_left hγ hTs## IRS and Firm Scope