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Complex, contact, Riemannian, pseudo-Riemannian and Finsler geometry, relativity, gauge theory, global analysis.
38
votes
3
answers
6k
views
Intuition behind the ricci flow
I hope you don't shoot me for this question.
I try to understand among other things the Ricci flow. However I have no idea of the intuition behind the definition. So my questions is:
What is the i …
5
votes
Modern mathematical books on general relativity
It's a while ago but I used to study the books:
An Introduction to General Relativity, Hughston and Tod (1990)
and
General Relativity With Applications to Astrophysics , Straumann (2004)
I remembe …
5
votes
Accepted
Whitney stratification and affine grassmanian
The point is following: $\overline{Gr^\lambda}$ is a finite dimensional variety acted upon by the pro-algebraic group $G(\mathbb{C}[[t]])$.
This action factors through the action of some finite dim …