xAct Tensor Computer Algebra

Showing 1-20 of 402 topics
Strange error possibly related to the Invar database Daniel Mahler 3/2/15
add to help PH M 2/24/15
Tree-level scattering diagram David Woodward 2/22/15
Second order perturbation R^4 Marco Letizia 2/16/15
Reducing computation time? Mario Herrero Valea 2/11/15
Problems deriving the action for cosmological perturbations using xPand Paul Mezgolits 1/30/15
How to define the Energy-Momentum tensor in xCoba? Pereira 1/21/15
help with Detg[] Ghazal G 1/21/15
Riemann tensors and antisymmetrized double derivatives Daniel Mahler 1/13/15
dimension dependent identities Daniel Mahler 1/13/15
vielbein and spin connection binata...@gmail.com 1/12/15
How do I install the xAct package in Mathematica Online? Stephen Pink 12/29/14
torsion freeness of CovD Daniel Mahler 12/15/14
component values of epsilon tensor with old style xCoba Daniel Mahler 12/15/14
Differentiating wrt to Riemann tensor Ilia Teimouri 12/14/14
Explicitly evaluating perturbation equations Jamal Shafiq 12/12/14
Explicit evaluation of perturbation equations (summing and differentiating) Jamal Shafiq 12/9/14
Working with multiple charts Daniel Mahler 12/7/14
Using Christoffel components in computations Daniel Mahler 12/7/14
Error from ToCanonical with xTensor 1.1.1 (Yosemite, Mathematica 10) Erik Schnetter 11/27/14
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