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manifold
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62
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1
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1
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2021-10-29 14:47:57 +0200
rburing
Differentiate vector field w.r.t a variable not defining the chart
derivative
manifold
chart
variables
118
views
1
answer
1
vote
2021-04-29 00:12:46 +0200
eric_g
Differential forms on non-standard spherical coordinates
differential_form
coordinates
manifold
94
views
no
answers
no
votes
2021-04-12 06:19:54 +0200
perfectly_odd
Is there a way to compute the "correct" distributional answer, -4*pi*dirac_delta(r), as the Laplacian of 1/r (in spherical coordinates on Euclidean space)?
manifold
sagemanifolds
dirac_delta
232
views
no
answers
1
vote
2020-07-10 06:14:08 +0200
wintermute
Defining $S^1$ with four charts
sagemanifolds
manifold
sagemanifold
manifolds
175
views
1
answer
1
vote
2020-04-30 10:00:00 +0200
eric_g
Multiprocess hangs
sage
manifold
multiprocessing
sagemanifolds
windows10
179
views
1
answer
no
votes
2019-10-11 00:53:12 +0200
JGC
Inverse of the transition map on a Manifold doesn't hold
manifolds
manifold
sagemanifolds
sagemanifold
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