Physics
Ryan Unger
  • Member for 7 years, 4 months
  • Last seen more than a week ago
  • Princeton, NJ, USA
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About

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

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52
Books for general relativity
Apr 4 '16
26
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
17
Adding a total time derivative term to the Lagrangian
Apr 4 '15
16
How could a cord withstand a force greater than its breaking strength?
Feb 15 '15
15
Metric inside a sphere of uniform density?
Apr 8 '15
15
A helpful proof in contracting the Christoffel symbol?
Feb 3 '17
14
Geodesic equation from Euler - Lagrange
Mar 31 '15
14
Why do the Einstein field equations (EFE) involve the Ricci curvature tensor instead of Riemann curvature tensor?
Jan 28 '15
11
Is it always possible to have a (local) time coordinate in GR?
Jan 7 '17
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Why did I get chat suspended for a year?
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36
Mathematica stuck in "running" for every calculation I attempt, kernel error
24
Proving Cartan's magic formula using homotopy
21
Why are geodesically convex sets diffeomorphic to $\Bbb R^n$?
16
Why are geodesically convex sets diffeomorphic to $\Bbb R^n$?
14
Can a set of Hausdorff codimension 2 disconnect a connected open set?

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