Multifractal Formalism for generalised local dimension spectra of Gibbs measures on the real line

Abstract

We refine the multifractal formalism for the local dimension of a Gibbs measure $\mu$ supported on the attractor $\Lambda$ of a conformal iterated functions system on the real line. Namely, for given $\alpha\in \mathbb{R}$, we establish the formalism for the Hausdorff dimension of level sets of points $x\in\Lambda$ for which the $\mu$-measure of a ball of radius $r_{n}$ centered at $x$ obeys a power law $r_{n}{}^{\alpha}$, for a sequence $r_{n}\rightarrow0$. This allows us to investigate the H\"older regularity of various fractal functions, such as distribution functions and conjugacy maps associated with conformal iterated function systems.