Seminar series
Date
Wed, 11 May 2016
Time
11:00 -
12:30
Location
N3.12
Speaker
Simon Bergant
Organisation
Oxford
In 1924, James W. Alexander constructed a 2-sphere in R3 that is not ambiently homeomorphic to the standard 2-sphere, which demonstrated the failure of the Schoenflies theorem in higher dimensions. I will describe the construction of the Alexander horned sphere and the Antoine necklace and describe some of their properties.