摘要：Let {𝑆𝑖}𝑙𝑖=1 be a weakly conformal iterated function system on ℝ𝑑 with attractor 𝐾. Let 𝜋 be the canonical projection. In this paper we define a new concept called “projection pressure” 𝑃𝜋(𝜑) for 𝜑∈𝐶(Σ) and show the variational principle about the projection pressure under AWSC. Furthermore, we check that the zero of “projection pressure” still satisfies Bowen's equation. Using the root of Bowen's equation, we can get the Hausdorff dimension of the attractor 𝐾.
