Geometry and Topology SeminarDouble Point Surgery and Configurations of Surfaces in 4-manifoldsHee Jung Kim, Max Planck-Bonn
In this talk, we introduce "double point surgery", a variation of
the Fintushel-Stern rim surgery, and use it to create configurations that
are smoothly knotted, without changing the topological type, or the smooth
isotopy type of the individual components of the configuration. As an
application of knotting a configuration, we show that double point surgery
gives rise to
interesting exotic group actions with somewhat more complicated singular
sets consisting of a configuration of surfaces.
2:30pm–3:45pm, Wednesday, December 2, 2009 in LGRT 1535
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