CMSA/Tsinghua Math-Science Literature Lecture: Robert Gompf

Robert E. Gompf (University of Texas, Austin) lectures on 'On classifying smoothings of R^4 - from the beginning to the present', tracing how 4-manifold topology emerged from the breakthroughs of Freedman and Donaldson and how Euclidean 4-space admits exotic smoothings that resist classification by countable numerical invariants.