English

Sublogarithmic-transexponential series

Logic 2022-11-15 v1

Abstract

We adapt the construction of the field of logarithmic-exponential transseries of van den Dries, Macintyre, and Marker to build an ordered differential field of sublogarithmic-transexponential series. We use this structure to build a transexponential Hardy field closed under composition. Specifically, we prove that the germs at ++\infty of Ltransexp\mathcal{L}_{\mathrm{transexp}}-terms in a single variable are ordered, where Ltransexp\mathcal{L}_{\mathrm{transexp}} is a language containing Lan(exp,log)\mathcal{L}_{\mathrm{an}}(\exp,\log) with new symbols for a transexponential function, its derivatives, and their compositional inverses.

Keywords

Cite

@article{arxiv.2211.06736,
  title  = {Sublogarithmic-transexponential series},
  author = {Adele Padgett},
  journal= {arXiv preprint arXiv:2211.06736},
  year   = {2022}
}

Comments

78 pages. Comments welcome