To cheer you up in difficult times 21: Giles Gardam lecture and new result on Kaplansky’s conjectures
Combinatorics and more 2021-02-26
Summary:
There is a very famous conjecture of Irving Kaplansky that asserts that the group ring of a torsion free group does not have zero-divisors. Given a group G and a ring R, the group ring R[G] consists of formal (finite) … Continue reading →