RT Journal Article T1 Bi-Lipschitz invariance of planar BV − and W1,1−extension domains A1 García Bravo, Miguel A1 Rajala, Tapio A1 Zhu, Zheng AB We prove that a bi-Lipschitz image of a planar BV -extension domain is also a BV -extension domain, and that a bi-Lipschitz image of a planar W1,1-extension domain is again a W1,1-extension domain. PB American Mathematical Society YR 2022 FD 2022 LK https://hdl.handle.net/20.500.14352/122499 UL https://hdl.handle.net/20.500.14352/122499 LA eng DS Docta Complutense RD 24 dic 2025