activity
20032025
most citedIteration of order preserving subhomogeneous maps on a cone

33 citations · 80 across the 12 of their papers we have counts for

collaborators

16 papers

math.NT2025

On the structure of the dimension spectrum for continued fraction expansions

Painos Chitanga, Bas Lemmens, Roger Nussbaum

We analyse the dimension spectrum of continued fractions expansions with coefficients restricted to infinite subsets of . We prove that the set of powers $P_q=\{q^n\co…

math.NT2020

Hidden Positivity and a New Approach to Numerical Computation of Hausdorff Dimension: Higher Order Methods

Richard S. Falk, Roger D. Nussbaum

In [14], the authors developed a new approach to the computation of the Hausdorff dimension of the invariant set of an iterated function system or IFS. In this paper, we extend thi…

math.NT2016

Eigenfunctions of Perron-Frobenius Operators and a New Approach to Numerical Computation of Hausdorff Dimension: Applications in

Richard S. Falk, Roger D. Nussbaum

We develop a new approach to the computation of the Hausdorff dimension of the invariant set of an iterated function system or IFS. In the one dimensional case that we consider her…

math.DS2016

A New Approach to Numerical Computation of Hausdorff Dimension of Iterated Function Systems: Applications to Complex Continued Fractions

Richard S. Falk, Roger D. Nussbaum

In a previous paper, dealing with "Applications in ," the authors developed a new approach to the computation of the Hausdorff dimension of the invariant set of an it…

math.FA2016

Detecting fixed points of nonexpansive maps by illuminating the unit ball

Bas Lemmens, Brian Lins, Roger Nussbaum

We give necessary and sufficient conditions for a nonexpansive map on a finite dimensional normed space to have a nonempty, bounded set of fixed points. Among other results we show…

math.NT2016★ 11 cited

C^m Eigenfunctions of Perron-Frobenius Operators and a New Approach to Numerical Computation of Hausdorff Dimension

Richard S. Falk, Roger D. Nussbaum

We develop a new approach to the computation of the Hausdorff dimension of the invariant set of an iterated function system or IFS. In the one dimensional case, our methods require…