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Title:
A new topological Helly theorem

Speaker:
Luis Montejano

Link:
http://www.birs.ca/events/2012/5-day-workshops/12w5020/videos/watch/201210230905-Montejano.html

Workshop:
Birs- 12w5020: Recent Advances in Transversal and Helly-type Theorems in Geometry, Combinatorics and Topology