25th NRW Topology Meeting

Speaker: Paul Arne Ostvar

Title: A¹-contractibility of Koras-Russell threefolds

Abstract:

We discuss the proofs of A¹-contractibility of Koras-Russell threefolds. For motivation we review classical results and questions in affine algebraic geometry and topology. Details can be found at http://arxiv.org/abs/1409.1293 and http://arxiv.org/abs/1512.01933.