christoffel(3,3,2, [t,r,theta,phi], m)
-sin(theta)*cos(theta)
 X = christoffel(1,1,1,[t,r,theta,phi],m)
 X
 1/2/((1/r - 1)*r^2)
 X.rational_simplify()
 -1/2/(r^2 - r)

SageDays/Kreyszig-cal-1 (last edited 2010-08-12 08:45:13 by jaimin)