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The Maxima on-line user's manual

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Christof

Function: christof (<dis>) A function in the ctensor (component tensor) package. It computes the Christoffel symbols of both kinds. The argument <dis> determines which results are to be immediately displayed. The Christoffel symbols of the first and second kinds are stored in the arrays lcs[i,j,k] and mcs[i,j,k] respectively and defined to be symmetric in the first two indices. If the argument to christof is lcs or mcs then the unique non-zero values of lcs[i,j,k] or mcs[i,j,k], respectively, will be displayed. If the argument is all then the unique non-zero values of lcs[i,j,k] and mcs[i,j,k] will be displayed. If the argument is false then the display of the elements will not occur. The array elements mcs[i,j,k] are defined in such a manner that the final index is contravariant.

load(ctensor);
(cframe_flag:false,gcd:spmod,ctrgsimp:true,ratfac:true);
lg:diag_matrix(-1,2,r^2,(sin(%theta)*r)^2);
ct_coords:[t,r,%theta,%phi];
depends(%nu,[r,t],%lambda,[r,t]);
cmetric(false);
christof(mcs);
 riemann(true);
ricci(true);
R:scurvature();

There are also some inexact matches for christof. Try ?? christof to see them.

(%o1)                                true
(%i2) 

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