On the website of the Berkeley mathematics department there is mention ([see this](https://events.berkeley.edu/index.php/calendar/sn/math.html?event_ID=133775)) of a colloquium held on november 5, 2020 (by Zoom) whose speaker was Shinichi Mochizuki, with a talk titled "Classical Roots of Inter-universal Teichmüller Theory". The corresponding slides seem to be online ([see this](http://www.kurims.kyoto-u.ac.jp/%7Emotizuki/2020-11%20Classical%20roots%20of%20IUT.pdf)). Here are my factual questions:


1. did this event really occur ?
2. if yes to 1, how was the speaker introduced ?
3. if yes to 1, do the slides reflect all that was said, or were there other comments, and if so what ?



Berkeley mathematics department colloquium by S.Mochizuki
1. Yes it really occurred.
2. He was introduced in the normal way, something like "Today we have Shinichi Mochizuki..." that mentioned his name, maybe his talk title and the institution he's from (can't remember exactly.)
3. He annotated those slides with a magnificent glitter-rainbow-colored pen, adding clarificatory details here and there. But yes, (to my understanding) those notes describe the content of what was said.


