Skip to main content
13 events
when toggle format what by license comment
Sep 22, 2016 at 14:34 history edited Szabolcs
edited tags
Nov 6, 2015 at 14:42 answer added George Hrabovsky timeline score: 3
Mar 17, 2015 at 10:41 vote accept user1997744
Dec 7, 2014 at 10:45 history tweeted twitter.com/#!/StackMma/status/541544003163136000
Dec 6, 2014 at 17:30 answer added Alexey Bobrick timeline score: 5
Dec 6, 2014 at 17:17 comment added user1997744 @AlexeyBobrick: That would be brilliant, thank you!
Dec 6, 2014 at 17:15 comment added Alexey Bobrick Yes, I can show you an example, but with another metric, should also work for you.
Dec 6, 2014 at 17:08 comment added user1997744 @AlexeyBobrick: Do you know how I can actually set my metric equal to some explicit matrix? And how I can get it to compute the Ricci tensor in the perturbation equation and carry out the index summation? I can then use Collect[] to sort out the mess.
Dec 6, 2014 at 17:06 comment added user1997744 @AlexeyBobrick: Nevermind, it does exist, but you need to also load xCoba :)
Dec 6, 2014 at 17:04 comment added user1997744 @AlexeyBobrick: Are you sure? MetricCompute doesn't come up with any suggestions in Mathematica.
Dec 6, 2014 at 17:00 comment added Alexey Bobrick I don't have it installed at the moment, but MetricCompute command used to work for getting geometric quantities from the metric.
Dec 6, 2014 at 16:11 history edited Dr. belisarius
edited tags
Dec 6, 2014 at 16:04 history asked user1997744 CC BY-SA 3.0