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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 …
Oliver Straser's user avatar
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 …
Oliver Straser's user avatar
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 …
Oliver Straser's user avatar