Exact Hausdorff centered measure of symmetry Cantor sets

Let K(λ1, λ2), the symmetry Cantor sets, be the attractor of an iterated function system {f1, f2, f3} on the line, where f1(x) = λ1x, , x [0, 1]. In this paper, we proved that if , where λ ≡ max{λ1, λ2}, then the exact Hausdorff centered measure Cs of K(λ1, λ2) equals 1, where s is the Hausdorff dimension of K(λ1, λ2).