Bi-Lipschitz arcs in metric spaces with controlled geometry.

Autor: Honeycutt, Jacob, Vellis, Vyron, Zimmerman, Scott
Zdroj: Revista Mathematica Iberoamericana; 2024, Vol. 40 Issue 5, p1887-1916, 30p
Abstrakt: In this paper, we generalize a bi-Lipschitz extension result of David and Semmes from Euclidean spaces to complete metric measure spaces with controlled geometry (Ahlfors regularity and supporting a Poincaré inequality). In particular, we find sharp conditions on metric measure spaces X so that any bi-Lipschitz embedding of a subset of the real line into X extends to a bi-Lipschitz embedding of the whole line. Along the way, we prove that if the complement of an open subset Y of X has small Assouad dimension, then it is a uniform domain. Finally, we prove a quantitative approximation of continua in X by bi-Lipschitz curves. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index