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Physics
Ryan Unger's user avatar
Ryan Unger's user avatar
Ryan Unger's user avatar
Ryan Unger
  • Member for 10 years, 3 months
  • Last seen this week
  • Princeton, NJ, USA
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About

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

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74
Books for general relativity
Apr 4, 2016
question
28
Do light waves precisely follow null geodesic paths in General Relativity?
Dec 18, 2015
answer
23
A helpful proof in contracting the Christoffel symbol?
Feb 3, 2017
question
19
How long can a particle survive inside of the horizon of a black hole?
Jul 16, 2015
answer
18
Adding a total time derivative term to the Lagrangian
Apr 4, 2015
answer
17
Metric inside a sphere of uniform density?
Apr 8, 2015
answer
17
Geodesic equation from Euler - Lagrange
Mar 31, 2015
answer
17
Why do the Einstein field equations (EFE) involve the Ricci curvature tensor instead of Riemann curvature tensor?
Jan 28, 2015
answer
15
How could a cord withstand a force greater than its breaking strength?
Feb 15, 2015
answer
12
Every Galilean transformation can be written as the composition of rotation, translation, and uniform motion
Apr 1, 2015
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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
28
Proving Cartan's magic formula using homotopy
23
Why are geodesically convex sets diffeomorphic to $\Bbb R^n$?
18
Why are geodesically convex sets diffeomorphic to $\Bbb R^n$?
17
Can a set of Hausdorff codimension 2 disconnect a connected open set?