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Symplectic reductions and GIT quotients: the Kempf-Ness theorem

Speaker: 
Enrico Schlitzer
Schedule: 
Friday, November 27, 2020 - 14:00
Location: 
Online
Location: 
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Abstract: 

The Kempf-Ness theorem relates algebraic (GIT) quotients with certain symplectic quotients. We will review the construction of such quotients and prove the simplest version of the K-N theorem, in the affine case. The attempt to generalize this result to an infinite-dimensional setting led to the notion of K-stability.

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