Equation Icon  ′ ′ 2 (ln H )′ 1 Δ M = − [1 ∕η − 1 + (ln Q) ]ΔM + 3-Ω----aH---Q-𝜃M , M 𝜃′ = − 𝜃 − 3-Ω aH Q-Δ . (1.3.26 ) M M 2 M η M