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GRwiki is fading away...

The server running GRwiki is old and dying...the hard drives are failing and the operating system is hopelessly out of date. When this server finally bites the dust, I don't plan to replace it. If you find the content of GRwiki is useful, I suggest you make a copy right away. If your computer is Linux based, the command

 wget -r -np -k http://grwiki.physics.ncsu.edu/wiki/Main_Page

should capture all of the files. Or you can download a tar file of the site from April 8, 2019 here:

https://relativity.wordpress.ncsu.edu/

• About GRwiki

• Covariant and Lie Derivatives.

• Christoffel Symbols, Riemann Tensor, etc.

• Variations of Christoffel, Riemann, etc.

• Tetrad Formalism, Weyl Scalars, etc.

• Differential Forms, Integration and Stokes' Theorem.

• Splitting Spacetime into Space and Time.

• Einstein-Maxwell Theory.

• Formulations of the Einstein Equations.
  • Hamiltonian (ADM)
  • gdot-Kdot
  • BSSN
  • Generalized BSSN
  • KST
  • NOR
  • Generalized Harmonic (second order)
  • Generalized Harmonic (first order)

• Gauge Conditions
  • Slicing Conditions
  • Shift Conditions

• Initial Value Problem
  • Conformal Transverse-Traceless Decomposition
  • Physical Transverse-Traceless Decomposition
  • Conformal Thin Sandwich Decomposition
  • Bowen-York Solution
  • Misner Data

• Exact Solutions
  • Schwarzschild Black Hole
  • Kerr Black Hole
  • Brill Waves
  • FLRW
  • deSitter
  • Anti-deSitter
  • Oppenheimer-Snyder Collapse