All Questions

My question is motivated by this question, and this answer to it. Below, let's consider the setup in that answer: Let $M$ be a Riemannian manifold. Let $G\times M\to M$ be a proper action of a ...

One knows that hyperbolic manifolds are locally conformally flat. How about those negatively pinched manifolds, i.e. the sectional curvature $K$ satisfy: $$ -\Lambda \le K \le -\lambda$$ for $\Lambda&...

I have been reading about tessellation representations of compact surfaces, such as how the square tiling the plane represents the torus. For surfaces of genus > 1 (the ones that interest me), we ...