3 papers
math.NT2026
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.CV2026
Carathéodory distance-preserving maps between bounded symmetric domains
Bas Lemmens, Cormac Walsh
We study the rigidity of maps between bounded symmetric domains that preserve the Carathéodory/Kobayashi distance. We show that such maps are only possible when the rank of the co…
math.FA2025
Infinite dimensional symmetric cones and gauge-reversing maps
Bas Lemmens, Mark Roelands, Marten Wortel
The famous Koecher-Vinberg theorem characterises the finite dimensional formally real Jordan algebras among the finite dimensional order unit spaces as the ones that have a symmetr…