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84 questions

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193
views
1
answer
1
vote
2021-12-18 17:08:58 +0200 eric_g

full metric transform

208
views
1
answer
1
vote
2022-01-28 14:41:12 +0200 eric_g

Tensor product of exterior power

430
views
1
answer
1
vote
2022-02-25 22:19:12 +0200 eric_g

conjugate of scalar field

112
views
1
answer
no
votes
2022-08-28 22:02:29 +0200 Sébastien

Manifold not defined

113
views
1
answer
no
votes
2023-08-31 10:17:12 +0200 eric_g

Covariant derivative

174
views
1
answer
no
votes
2023-11-15 15:39:15 +0200 eric_g

[SageManifolds] Error : Black hole rendering with SageMath

69
views
1
answer
no
votes
2023-11-21 14:51:30 +0200 eric_g

grad on a generic metric

58
views
1
answer
no
votes
2023-11-26 09:28:25 +0200 GPN

differential (1-form) simplifies a bit too much

304
views
1
answer
no
votes
2024-01-03 10:28:39 +0200 idontgetoutmuch

Connection Forms not Anti-Symmetric

148
views
1
answer
no
votes
2024-01-13 14:38:44 +0200 eric_g

Computing the Chern–Pontryagin invariant

275
views
2
answers
1
vote
2020-02-14 23:26:28 +0200 rburing flag of France

Can't substitute H=dot(a)/a in SageMath

76
views
2
answers
no
votes
2023-11-26 15:44:38 +0200 eric_g

Wrong result for gradient in spherical coordinates [closed]

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