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MSRI Evans Lecture Series: "Exotic smooth 4-manifolds" April 12, 2010
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Location: UC Berkeley, 60 Evans Hall
Speaker(s) András Stipsicz
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4-dimensional manifolds exhibit phenomena which do not happen in any other dimension: there are examples of infinitely many smooth 4-manifolds which are homeomorphic but not diffeomorphic.

The ’exotic’ behaviour of a smooth 4-manifold seems to be very closely related to the genera of 2-dimensional surfaces it contains. We will discuss a method for changing the differentiable structure of the famous K3-surface.

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