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2020-10-27 18:32:46 +0200 | commented answer | Extrinsic curvature of Riemannian submanifold: no basis found for computing the components That solved it. Thanks! |
2020-10-26 18:48:34 +0200 | asked a question | Extrinsic curvature of Riemannian submanifold: no basis found for computing the components I'm trying to compute the extrinsic curvature of a constant I'm defining the submanifold using the following commands: But when computing the extrinsic curvature, I get an error: Computing the normal vector leads to a similar error: What am I doing wrong? The examples at (https:// doc.sagemath.org/html/en/reference/manifolds/sage/manifolds/differentiable/pseudo_riemannian_submanifold.html) work fine for me. |