SageManifolds metaticket 2
— at Version 11
This metaticket collects tickets related to manifolds in Sage 9.3 or higher. For the initial implementation of manifolds in Sage up to version 9.2, see the metaticket 1: #18528.
The works listed here result from the SageManifolds project, developed by the following authors.
Generic
 #30139: Metaticket about manifold code improvement
 #30116: Replace
__eq__
by _richcmp_
for manifolds
 #30473: Unicode art for sage.manifolds
 #30554: Metaticket: deprecated features
 #30189: Add examples to manifold catalog
 #30799: Add folder for manifold examples (merged in Sage 9.3.beta0)
 #31202: Fix some typos in
src/sage/manifolds/
Algebraic part
 #28813: Enhance symmetry handling for tensors
 #29099: Extension of admissible indices conventions for tensors with indices
 #29619: Sparse iterator for tensor components
 #29820: Compacting the display of tensor product
 #29796: Parallelization of wedge product
 #30095: sage.tensor.modules: Add
SymPowerFreeModule
 #30096: sage.tensor.modules: Add backends using TensorFlow Core and PyTorch:
 #30164: Add category
FreeModules
(without distinguished basis)
 #30174: Trivial coercion
Modules(QQ)(FiniteRankFreeModule(QQ, 3))
fails
 #30229: Submodules of
TensorFreeModule
defined by the symmetries of a Components
object
 #30235: Add construction methods to
FiniteRankFreeModule
and CombinatorialFreeModule
 #30241: New implementation class
FiniteRankDualFreeModule
 #30242: Make
ExtPowerFreeModule
a quotient of TensorFreeModule
 #30245:
FreeModuleAutomorphism
should not inherit from FreeModuleTensor
 #30244: Use
_matmul_
operator (@)
 #30276: Phased permutation groups
 #30302: Arithmetic on tensor module elements, manifold objects: always return a copy
Topological manifolds
 #24151: Improve simplifications in calculus on manifolds
 #24290: Make simplifications in SymPy calculus on manifolds rely on SymPy only
 #29775: Add a bit of typing to manifold code
 #30232: Coercion/conversion
SR
to ScalarFieldAlgebra
 #30263:
declare_union
yields wrong results
 #30310: Immutability of chart functions
Differentiable manifolds
 #28629: Automorphism fields: remove SR enforcement when computing the inverse
 #28640: Vectorvalued forms:
 #27492: Bug in parallelized computations involving symbolic functions
 #29234: Inheritance structure: tensor fields as sections of vector bundles
 #29581: New algorithm for characteristic classes
 #30211: Characteristic classes: sequences
 #30261: Immutability for manifold objects
 #30272: Mixed forms:
set_comp
, comp
 #30284: Immutability of bundle connections
 #30495: sage.manifolds: Connect to Pymanopt
 #30714: Tensor arithmetics on minimal amount of domains
 #30781: Covariant derivatives along smooth maps
 #30830: Subintervals of
OpenInterval
and UniqueRepresentation
(merged in Sage 9.3.beta2)
 #30832: Connect
RealSet
to sage.manifolds
 #31215: Documentation of item assignment behavior for bundle connections
PseudoRiemannian manifolds
 #25457: Declaring a metric along with its components
 #25500: Energy momentum tensor, Einstein tensor and Einstein spacetime
 #30804: Add standard sphere to manifold catalog (merged in Sage 9.3.beta2)
 #30824: More flexible coordinate treatment for
EuclideanSpace
Poisson manifolds
 #30362: Add symplectic structures
Complex and almost complex manifolds
 #18786: almost complex structures through Hodge structures
Change History (11)
Cc: 
Travis Scrimshaw Matthias Köppe Michael Jung added

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