GRwiki:About

From GRwiki

GRwiki is a repository of basic definitions and formulas for gravitational physics. It is meant to serve as a high-level tool for active GR researchers, not a place to learn the theory. This site began as a transcription of handwritten notes, including definitions and derivations, that I collected over the years and kept in a file drawer. These notes have been an indispensable resource for my research. If I ever needed the definition of the Lie derivative of a weight -2 covariant vector density, I knew where I could find it. The problem with a file drawer full of notes is that it's not very portable. I wanted to have access to these results from my office, home, and on the road. Hence this wiki was born.

Please use this site with care. My goal is to create a site with as few errors as possible, but there are no guarantees. You should not trust any result posted on GRwiki unless you have verified it for yourself.

You are also welcome to contribute to GRwiki. Please give careful thought to any additions or changes you might wish to make. Currently any registered user is allowed to edit GRwiki pages.

David Brown
NCSU
March 2008