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Title:
A simple purely group-theoretic characterization of the Grothendieck-Teichmuller group

Speaker:
Yuichiro Hoshi

Link:
http://www.birs.ca/events/2017/5-day-workshops/17w5112/videos/watch/201706221414-Hoshi.html

Workshop:
Birs- 17w5112: Nilpotent Fundamental Groups