Opened 3 years ago
Last modified 8 months ago
#25500 needs_work enhancement
Energy momentum tensor, Einstein tensor and Einstein spacetime
Reported by:  Dicolevrai  Owned by:  

Priority:  major  Milestone:  sage8.3 
Component:  geometry  Keywords:  Energy momentum tensor, Einstein tensor, Einstein spacetime 
Cc:  egourgoulhon  Merged in:  
Authors:  Hans FOTSING TETSING  Reviewers:  Eric Gourgoulhon 
Report Upstream:  N/A  Work issues:  
Branch:  public/manifolds/EinsteinSpaceTime (Commits, GitHub, GitLab)  Commit:  05646a6c4be21da90612be17f207cf4cce4e6ede 
Dependencies:  Stopgaps: 
Description (last modified by )
This ticket provides to Sage the possibility to check if a spacetime is a solution of Einstein's equations and even with some assumptions given as a list. Sage would be able to compute the Einstein's tensor and the user can set the gravitational constante and more. The user can also check if a 2times covariant tensor is an energy momentum tensor. It is possible to ask conditions to obtain a spacetime or an energy momentum, the output might be a system of equations.
Change History (6)
comment:1 Changed 3 years ago by
 Status changed from new to needs_review
comment:2 Changed 3 years ago by
 Commit changed from 3b3158343d314aadefbd5003b6bda3cd1f3bf420 to 61e637cd41c86d49c8836489fb85be1006c9471b
comment:3 Changed 3 years ago by
 Commit changed from 61e637cd41c86d49c8836489fb85be1006c9471b to 05646a6c4be21da90612be17f207cf4cce4e6ede
Branch pushed to git repo; I updated commit sha1. New commits:
25cff3c  Enter the component of a metric while declaring the metric on a Parallelizable Manifold

a406fe6  Solving some doctests errors

42eb129  Adding the branch public/manifolds/MetricComponents into public/manifolds/EinsteinSpaceTime

05646a6  Adding the branch public/manifolds/MetricComponents into public/manifolds/EinsteinSpaceTime

comment:4 Changed 3 years ago by
Pleace, this ticket need review now, it has passed all doctests.
Thanks,
New commits:
61e637c  Correction of some doctests: Einstein spacetime

25cff3c  Enter the component of a metric while declaring the metric on a Parallelizable Manifold

a406fe6  Solving some doctests errors

42eb129  Adding the branch public/manifolds/MetricComponents into public/manifolds/EinsteinSpaceTime

05646a6  Adding the branch public/manifolds/MetricComponents into public/manifolds/EinsteinSpaceTime

comment:5 Changed 3 years ago by
 Description modified (diff)
comment:6 Changed 8 months ago by
 Dependencies 1 deleted
 Status changed from needs_review to needs_work
no longer applies, the branch is red
Branch pushed to git repo; I updated commit sha1. New commits:
Correction of some doctests: Einstein spacetime