Monthly Archives: May 2009

Around the Cap-Set problem (B)

Part B: Finding special cap sets This is a second part in a 3-part series about variations on the cap set problem that I studied with Roy Meshulam. (The first post is here.)  I will use here a different notation than in part … Continue reading

Posted in Combinatorics, Open problems | Tagged , , | 4 Comments

The Thompson Group

Update (july 2009): A detailed posting on the Thompson group appeared on “Geometry and the Imagination,” Danny Calegary’s blog. In spite of two recent preprints one claiming that the Thompson group is amenable and the other claiming the opposite, the problem appears … Continue reading

Posted in Algebra, Conferences | 4 Comments