Hausdorff Dimension and Topological Entropies of a Solenoid

The purpose of this paper is to elucidate the interrelations between three essentially different concepts: solenoids, topological entropy, and Hausdorff dimension. For this purpose, we describe the dynamics of a solenoid by topological entropy-like quantities and investigate the relations between them. For L-Lipschitz solenoids and locally [Formula: see text] expanding solenoids, we show that the topological entropy and fractal dimensions are closely related. For a locally [Formula: see text] expanding solenoid, we prove that its topological entropy is lower estimated by the Hausdorff dimension of X multiplied by the logarithm of [Formula: see text].