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math.DS2026
Unveiling universality, encloseness, and orthogonality in dynamics
J. Aaronson, A. I. Danilenko, J. KuÅaga-Przymus +1
Motivated by Sarnak's conjecture on Möbius orthogonality, we investigate the general problem of orthogonality for a bounded sequence to topological models of characteristic classe…
math.DS2025
On orthogonality to uniquely ergodic systems
Martyna Górska, Mariusz LemaÅczyk, Thierry de la Rue
We solve Boshernitzan's problem of characterization (in terms of so called Furstenberg systems) of bounded sequences that are orthogonal to all uniquely ergodic systems. Some varia…