BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
LOCATION: Berkner Hall Auditorium
DESCRIPTION:BSA Distinguished Lecture\nSpheres: One Hundred Years of Topology\nPresented By\: Professor John Milnor\, Department of Mathematics\, Stony Brook University\nEveryone knows the familiar 2-dimensional spherical surface; but spheres of higher dimension also play in important role in mathematics and its applications. (Believe it or not the 3-dimensional sphere was first described around the year 1320\, by Dante.)
For topologists\, the key problem was posed by Poincar\'e in 1904. Topologists are interested not only in the standard round sphere\, but also in deformed or wrinkled versions of it.
Poincar\'e proposed a simple criterion for deciding whether a given object is a three dimensional topological sphere.
For the next hundred years topologists were totally frustrated in trying to find a proof or counterexample for his proposed statement\, and for its higher dimensional analogues. There were many important steps along the way\, with partial results which generated a great deal of interesting mathematics. But there were also many false proofs\, and ideas which didn't pan out.
The successful proof by Grisha Perelman in 2003 was a real triumph.
The talk will provide a tour through some of these results and the people who developed them.\n\n\n***** IMPORTANT NOTE *****\nEvent dates\, times\, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the most recent event information:\nhttps://www.bnl.gov/events/\n
UID:1fcd23de465d5db07d606be72cf2136c@bnl.gov
DTSTAMP:20161001T120630Z
DTSTART:20121108T160000
DTEND:20121108T170000
SUMMARY:BSA Distinguished Lecture
END:VEVENT
END:VCALENDAR