theorem relaxation_rate_nonneg (e : NSectorEconomy N) (n : Fin N) :
0 ≤ sectorRelaxRate e n := by
simp only [sectorRelaxRate]
apply mul_nonneg
· apply mul_nonneg
· exact le_of_lt (e.hℓ n)
· exact abs_nonneg _
· exact le_max_left 0 _Results 1-7: Relaxation on the CES Potential Landscape