∫ ∫ ≤ Ω Ω Ω Θ ⋅ ≤ ≤ ≥ ≥ ≤ ≤ ≤ ≤ ≤ ≤ ≤ 0 ≥ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≥ ≤ ≤ ≤ ≤ Ω ≥ ≤ Ω ≥ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ ≤ Ω ≥ ≤ ≤ ≤ ≤ Ω ≥ ≤ ≤ ≤ ≤ Ω ≥ ≤ Θ Θ τ Σ τ