On the extension of Whitney ultrajets, II
Volume 250 / 2020
Studia Mathematica 250 (2020), 283-295
MSC: 26E10, 30D60, 46E10, 58C25.
DOI: 10.4064/sm180903-12-11
Published online: 29 July 2019
Abstract
We characterize the validity of the Whitney extension theorem in the ultradifferentiable Roumieu setting with controlled loss of regularity. Specifically, we show that in the main Theorem 1.3 of [Studia Math. 245 (2019), 255–287] condition (1.3) can be dropped. Moreover, we clarify some questions that remained open there.