Introduction to Ctensor Ctensor
(g + g - g )/2 . ik,j jk,i ij,k
To evaluate the Christoffel symbols for a particular metric, the variable METRIC must be assigned a name as in the example under CHR2.
ks CHR2([i,j],[k]) = g (g + g - g )/2 is,j js,i ij,s
h h h %1 h CURVATURE = - CHR2 - CHR2 CHR2 + CHR2 i j k i k,j %1 j i k i j,k h %1 + CHR2 CHR2 %1 k i j