An interpolation problem in the Denjoy-Carleman classes
Analysis of PDEs
2022-01-19 v2 Functional Analysis
Abstract
Inspired by some iterative algorithms useful for proving the real analyticity (or the Gevrey regularity) of a solution of a linear partial differential equation with real-analytic coefficients, we consider the following question. Given a smooth function defined on and given an increasing divergent sequence of positive integers such that the derivative of order of has a growth of the type , when can we deduce that is a function in the Denjoy-Carleman class ? We provide a positive result, and we show that a suitable condition on the gaps between the terms of the sequence is needed.
Cite
@article{arxiv.2112.03180,
title = {An interpolation problem in the Denjoy-Carleman classes},
author = {Paolo Albano and Marco Mughetti},
journal= {arXiv preprint arXiv:2112.03180},
year = {2022}
}