English

Quasianalytic ultradifferentiability cannot be tested in lower dimensions

Classical Analysis and ODEs 2019-03-12 v2 Functional Analysis

Abstract

We show that, in contrast to the real analytic case, quasianalytic ultradifferentiability can never be tested in lower dimensions. Our results are based on a construction due to Jaffe.

Cite

@article{arxiv.1810.10767,
  title  = {Quasianalytic ultradifferentiability cannot be tested in lower dimensions},
  author = {Armin Rainer},
  journal= {arXiv preprint arXiv:1810.10767},
  year   = {2019}
}

Comments

11 pages, some details added to the proofs

R2 v1 2026-06-23T04:52:17.090Z