The function displayGR(Einstein, G) displays the nonzero components and the index character of the tensor_type G using the symmetries of the Einstein tensor to reduce the number of components shown. G is expected to be a tensor of rank 2 with the proper symmetries. It can be calculated using tensor[Einstein].

The function display_allGR(coord, cov_met, cont_met, det_met, C1, C2, Rm, Rc, R, G, C) displays all of the GR-related objects passed in the parameter list. They must be passed in the following order: the coordinates list, the covariant metric tensor ([-1,-1]), the contravariant metric tensor ([1,1]), the determinant of the metric tensor components (algebraic type), the Christoffel symbols of the 1st kind ([-1,-1,-1]), the Christoffel symbols of the 2nd kind ([1,-1,-1]), the Riemann tensor, the Ricci tensor, the Ricciscalar ([]), the Einstein tensor, the Weyl tensor.  Each of the quantities is displayed by making the appropriate call to tensor[displayGR]. See tensor[tensorsGR] for the calculation of these quantities.

For displaying general tensor_type objects not listed above, use the 'display' option of tensor[act].

These functions are part of the tensor package, and so can be used in the form displayGR(..) / display_allGR(..) only after performing the command with(tensor), or with(tensor, displayGR) / with(tensor, display_allGR).