Slide shows

Expository slides which survey the contents of Peter Teichner's Lecture notes on Slice Knots.

A talk on a 2nd order algebraic concordance group.

A talk on Casson-Gordon style obstructions to a 2-component link with linking number one being concordant to the Hopf link.

A talk on New Uses for the Alexander Invariant.

Casson towers and slice knots from Knots and Low dimensional manifolds in Busan, Korea.