Summary: Corks, plugs and Stein manifolds
Selman Akbulut
Michigan State University
January 7, 2011
4-manifolds are spaces which are locally R4
R
R4
3
M
4
() Corks, plugs and Stein manifolds January 7, 2011 2 / 18
We visualize 4-manifolds by handles
4
B
4
1- handles
2-handles
3-handles
M
4