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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 6 years, 9 months
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  • Last seen Jun 12 at 14:09

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52 Books for general relativity Apr 4 '16
25 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
16 Adding a total time derivative term to the Lagrangian Apr 4 '15
15 A helpful proof in contracting the Christoffel symbol? Feb 3 '17
14 Why do the Einstein field equations (EFE) involve the Ricci curvature tensor instead of Riemann curvature tensor? Jan 28 '15
13 Metric inside a sphere of uniform density? Apr 8 '15
11 Geodesic equation from Euler - Lagrange Mar 31 '15
11 Is it always possible to have a (local) time coordinate in GR? Jan 7 '17
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