Invitation to inter-universal Teichmüller Theory (IUT)
RIMS workshop, August 31-September 3 2021



Shinichi Mochizuki, Yuichiro Hoshi, Ivan Fesenko, Yuichiro Taguchi.

This workshop is one of four workshops of special RIMS year "Expanding Horizons of Inter-universal Teichmüller Theory".

This workshop will be directed primarily toward beginning learners of inter-universal Teichmüller theory, who are, nonetheless, familiar with basic aspects of arithmetic geometry. The purpose of the workshop is to further dissemination activities concerning inter-universal Teichmüller theory by concentrating on the exposition of the fundamental ideas underlying theory, as well as of certain basic technical results and notions that are used in the theory.

The approach to exposing such fundamental ideas will differ substantially from that of previous workshops on inter-universal Teichmüller theory in that it will focus on discussing various fundamental issues, as well as misunderstandings and questions, that arise in the course of studying the theory. Such discussions will build on the extensive experiences and know-how, with regard to exposing the theory, of researchers who have already acquired a thorough understanding of the theory.

Invited speakers:

Kazumi Higashiyama (RIMS, Kyoto Univ., Japan),
Yuichiro Hoshi (RIMS, Kyoto Univ., Japan),
Arata Minamide (RIMS, Kyoto Univ., Japan),
Shinichi Mochizuki (RIMS, Kyoto Univ., Japan),
Wojciech Porowski (Univ. Nottingham, UK),
Shota Tsujimura (RIMS, Kyoto Univ., Japan),
Go Yamashita (RIMS, Kyoto Univ., Japan)
Yu Yang (RIMS, Kyoto Univ., Japan)

RIMS Workshop supported by RIMS and
Symmetries and Correspondences

Venue: Kyoto University,
RIMS (main building),
Room 420.
By Zoom for participants outside Japan

To register to participate, please send an email with your name, position and affiliation to

The special RIMS year "Expanding Horizons of Inter-universal Teichmüller Theory" will also include the following three workshops:

Foundations and perspectives of anabelian geometry,

Combinatorial anabelian geometry and related topics,

Inter-universal Teichmüller theory (IUT) summit 2021.

Animations 1 and 2 illustrating IUT

The images on this page are taken from these animations

All images on this page and its subpages are subject to copyright © 2016 RIMS. All rights reserved. Any reproduction or republication of the images, without a prior written consent of the organisers, is expressly prohibited.