#19823: Addcode for computation of the Schouten, Cotton, and Cotton-York
tensors of
a riemannian metric
-------------------------------------+-------------------------------------
Reporter: pang | Owner: pang
Type: enhancement | Status: new
Priority: trivial | Milestone:
Component: geometry | Resolution:
Keywords: differentiable | Merged in:
manifold, Riemannian metric, | Reviewers:
Cotton tensor, Cotton-York | Work issues:
tensor, Schouten tensor | Commit:
Authors: pang | 5fa71f72b68b916cbca5b6730c06ecbe1a0d02f4
Report Upstream: N/A | Stopgaps:
Branch: |
public/manifolds/Schouten_Cotton_York|
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by pang):
* commit: => 5fa71f72b68b916cbca5b6730c06ecbe1a0d02f4
* branch: => public/manifolds/Schouten_Cotton_York
Comment:
Last 10 new commits:
||[http://git.sagemath.org/sage.git/commit/?id=8be9a45f9cb734c5f77a964dd70e4df9bac6e0d8
8be9a45]||{{{Merge branch 'public/manifolds/diff_manif_metrics' of
git://trac.sagemath.org/sage into #19147 (affine connections on manifolds
with unique representation).}}}||
||[http://git.sagemath.org/sage.git/commit/?id=8f0659a0c55b926a32ac5429e54b722e2be60a0a
8f0659a]||{{{Pseudo-Riemannian metrics on smooth manifolds without unique
representation}}}||
||[http://git.sagemath.org/sage.git/commit/?id=cb47399ef5f07254fc10224490b00bc9bd2dd93f
cb47399]||{{{Merge branch 'diff_manif_connections' into diff_manif_metrics
to propagate minor changes in affine connections.}}}||
||[http://git.sagemath.org/sage.git/commit/?id=58723e996cc8a6ff89c86fdde20928d246a6c2f9
58723e9]||{{{Revert to UniqueRepresentation for differentiable manifolds:
metric}}}||
||[http://git.sagemath.org/sage.git/commit/?id=2918953e517d371e70f8dcaa5939632252f945f5
2918953]||{{{Diff. manifolds: metrics, with the change in symbolic
expression logic induced by #19312 (Sage 6.10.beta7)}}}||
||[http://git.sagemath.org/sage.git/commit/?id=aae566d58d9a8bedcfddda093b40bcd1ce48faff
aae566d]||{{{Improve parallelization in Components and derived
classes}}}||
||[http://git.sagemath.org/sage.git/commit/?id=98810dff8d2f493d701b0fb20e1fb6e7e1794365
98810df]||{{{Diff. manifolds: metrics, with improvements in
parallelization of Components}}}||
||[http://git.sagemath.org/sage.git/commit/?id=bd5d69fca253fb76a3070b78b3d91c91b65e345a
bd5d69f]||{{{Merge branch 'public/manifolds/sm-0.9' of
git://trac.sagemath.org/sage into sagemanifolds}}}||
||[http://git.sagemath.org/sage.git/commit/?id=14b7b6cbac510665fc2357e84d3d6fb800a62e5a
14b7b6c]||{{{Merge branch 'develop' of git://github.com/sagemath/sage into
sagemanifolds}}}||
||[http://git.sagemath.org/sage.git/commit/?id=5fa71f72b68b916cbca5b6730c06ecbe1a0d02f4
5fa71f7]||{{{Add three methods schouten, cotton, cotton_york, toghether
with internal variables self._schouten, self._cotton, self._cotton_york
that work analogously to the method self.ricci or self.ricci_scalar}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/19823#comment:2>
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