How can I define a submanifold-with-boundary of a Euclidean space in Sage?

asked 2021-04-07 19:59:42 +0200

Reasons for asking: I'd like to integrate a differential form over, say, a finite cylinder, and then extract the boundary of the cylinder for further computations.

answered 2021-04-08 09:51:19 +0200

eric_g
8209 ●10 ●61 ●162 https://luth.obspm.fr/...

Sorry, manifolds with boundary are not implemented yet. If you would like to implement them in SageMath, please visit https://sagemanifolds.obspm.fr/contri... and https://trac.sagemath.org/ticket/30525.

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Thanks. I thought this might be the case, but wanted to make sure I wasn't missing something obvious.

perfectly_odd ( 2021-04-09 01:31:39 +0200 )edit

There is already a ticket for manifolds with boundaries: Trac 30080, so they might be implemented soon.

eric_g ( 2021-04-12 11:03:54 +0200 )edit

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How can I define a submanifold-with-boundary of a Euclidean space in Sage?

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How can I define a submanifold-with-boundary of a Euclidean space in Sage?