## View abstract

### Invited talk

Friday, July 23, 12:15 ~ 13:15 UTC-3

## Hardy fields and Transseries

### Lou van den Dries

This concerns joint work with Matthias Aschenbrenner and Joris van der Hoeven. The focus of our book Asymptotic Differential Algebra and Model Theory of Transseries '' (Annals of Mathematics Studies 195, 2017, Princeton University Press) is on understanding the differential field of transseries. To deal with Hardy fields we recently refined the general theory from that book considerably. This has benefits beyond Hardy fields. I will start from scratch by introducing Hardy fields and state our main result about Hardy fields, which basically amounts to a complete theory about extending Hardy fields. I will include some material on transseries and on how they relate to Hardy fields.