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15 votes
1 answer
1k views

Ricci curvature : beyond heat-like flows

Let me give you some context first: just a few days ago I found some intriguing references to Ricci flows in the setting of directed graphs. There are at least two versions of Ricci curvature in the ...
Mirco A. Mannucci's user avatar
9 votes
3 answers
1k views

Does there exist a notion of discrete riemannian metric on graph?

I would like to know if there is any notion of a discrete Riemannian metric on graphs. C. Mercat has worked on discrete Riemann Surfaces, but that's not exactly what I am working on. To be more ...
Laurent.C's user avatar
8 votes
2 answers
484 views

Preferred embedding of finite metric spaces in riemaniann manifolds of given dimension

In search for a Machian formulation of mechanics I find the following problem. In Machian mechanics absolute space does not exists, and the only real entities are the relative distances between the ...
Bruno Galvan's user avatar