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Ryan Unger

Math PhD student. Interested in geometric analysis and mathematical general relativity.

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  • Princeton, NJ, USA
  • Member for 5 years, 6 months
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  • Last seen Mar 6 at 13:51

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49 Books for general relativity Apr 4 '16
24 Do light waves precisely follow null geodesic paths in General Relativity? Dec 18 '15
19 How long can a particle survive inside of the horizon of a black hole? Jul 16 '15
16 How could a cord withstand a force greater than its breaking strength? Feb 15 '15
15 A helpful proof in contracting the Christoffel symbol? Feb 3 '17
13 Why do the Einstein field equations (EFE) involve the Ricci curvature tensor instead of Riemann curvature tensor? Jan 28 '15
12 Metric inside a sphere of uniform density? Apr 8 '15
11 Does mathematical sloppiness in quantum mechanics ever produce incorrect predictions? Jul 27 '17
11 Is it always possible to have a (local) time coordinate in GR? Jan 7 '17
10 What is the reason/significance of using $ \sum\limits_{n=1}^{\infty}n\rightarrow-\frac{1}{12}$? Oct 10 '15
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