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Apr 13, 2017 at 12:57 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Feb 15, 2015 at 10:24 history closed Will Jagy
Anton Petrunin
Stefan Kohl
Peter Crooks
S. Carnahan
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Feb 13, 2015 at 17:50 comment added Learning math I'm sorry to hear that! By the way, I've to admit that I LOVED your book for its clear explanation and I do have the original copy myself! Also, I'd be happy (and am sure many others too) if you write a "second course" book on Riemannian Geometry, including all the comparison theorems, Böchner techniques etc.
Feb 13, 2015 at 17:41 comment added Jack Lee I'd like to point out that if my Riemannian Manifolds book is "available for free download online," it is an illegal pirated copy. The copyright is owned by Springer, who has not given anyone permission to post it online.
Feb 13, 2015 at 17:00 history edited Learning math CC BY-SA 3.0
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Feb 13, 2015 at 15:24 comment added Deane Yang You should try to work it out yourself using either holonomy or Jacobi fields
Feb 12, 2015 at 21:22 history edited Learning math CC BY-SA 3.0
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Feb 12, 2015 at 21:09 comment added Learning math Prof. Petrunin, do you mind giving me some pointers in the direction of the proof of your statement? I'd guess the proof might be a bit ugly, but I'd appreciate to be told what're the steps. By the way, I think you've meant all the transverse curves are geodesics as well (apart from the geodesics in the geodesic variation curves)? Thanks!
Feb 12, 2015 at 20:25 comment added Anton Petrunin If $\phi$ is a geodesic for all $\gamma$ and $E$ then $M$ is flat.
Feb 12, 2015 at 19:29 review Close votes
Feb 15, 2015 at 10:24
Feb 12, 2015 at 18:47 history edited Learning math CC BY-SA 3.0
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Feb 12, 2015 at 18:42 history asked Learning math CC BY-SA 3.0