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84 questions

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153
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1
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no
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2024-01-13 14:38:44 +0200 eric_g

Computing the Chern–Pontryagin invariant

298
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1
answer
1
vote
2016-11-30 14:50:38 +0200 eric_g

Error with metric

354
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1
answer
1
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2018-04-22 22:30:21 +0200 eric_g

Basic work on tensor components

425
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1
answer
1
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2018-11-08 13:28:54 +0200 tmonteil

Killing vectors

455
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1
answer
1
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2018-11-18 21:06:10 +0200 eric_g

SageManifolds different frames

200
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no
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1
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2018-11-22 09:30:38 +0200 Dox flag of Chile

Tensor density in sagemanifolds?

498
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1
answer
1
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2018-12-15 14:55:49 +0200 eric_g

Wrong Pointer

435
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1
answer
1
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2018-12-20 11:20:55 +0200 kva

Velocity of time

710
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1
answer
1
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2019-03-13 11:59:19 +0200 eric_g

Coefficients of partial derivatives

261
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1
answer
1
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2019-04-23 17:33:01 +0200 dan_fulea

Tensor slicing

694
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1
answer
1
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2019-05-21 23:16:31 +0200 eric_g

set_default_chart seems to fail

259
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1
answer
1
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2019-06-03 18:42:58 +0200 eric_g

Trouble with spherical coordinates in sagemanifolds

278
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1
answer
1
vote
2019-08-30 11:29:55 +0200 eric_g

Changing chart multiple times in sagemanifolds

192
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1
answer
1
vote
2019-09-27 17:03:29 +0200 eric_g

Display connection coefficients under a change of chart

170
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1
answer
1
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2019-09-27 22:41:00 +0200 eric_g

Transformation of derivative under a change of chart

218
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1
answer
1
vote
2019-10-23 17:59:59 +0200 eric_g

Compute the inverse of a 2-form

403
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1
answer
1
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2019-11-29 00:05:20 +0200 eric_g

Check if a curve is a geodesic

361
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1
answer
1
vote
2020-01-18 00:06:25 +0200 rburing flag of France

Unable to use substitute_function in SageManifolds

284
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2
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1
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2020-02-14 23:26:28 +0200 rburing flag of France

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

659
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1
answer
1
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2020-04-30 10:00:00 +0200 eric_g

Multiprocess hangs

274
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no
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1
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2020-07-10 06:14:08 +0200 wintermute

Defining $S^1$ with four charts

447
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1
answer
1
vote
2020-08-12 23:44:10 +0200 eric_g

Sagemanifolds display has deteriorated

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