Equation Icon  [ ] 2 2 2 dr2- 2 2 2 2 ds = Γ (𝜃) − r dt + r2 + α(𝜃) d𝜃 + γ(𝜃) (dĪ• + krdt ) , e χA = χA (𝜃), AI = fI(𝜃)(dĪ• + krdt) − -Id Ī•, (25 ) k