Background on cohomological point of view (this video was a do-over, since there were problems with the videotaping of the talk when it took place on Wednesday. May 9 at the workshop)

Ted Chinburg

http://www.birs.ca/events/2018/5-day-workshops/18w5118/videos/watch/201805111300-Chinburg.html

Birs- 18w5118: An Algebraic Approach to Multilinear Maps for Cryptography