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103 votes
4 answers
5k views

How feasible is it to prove Kazhdan's property (T) by a computer?

Recently, I have proved that Kazhdan's property (T) is theoretically provable by computers (arXiv:1312.5431, explained below), but I'm quite lame with computers and have no idea what they actually can ...
Narutaka OZAWA's user avatar
2 votes
1 answer
361 views

Can primitive recursive functions be simulated in the smallest reasonable primitive recursive group?

Second Edition, completely rewritten with unchanged questions. The said questions are motivated by the bizarre wording of the concluding § in A Class of Reversible Primitive Recursive Functions by L. ...
François Jurain's user avatar