v0.9.15

Manifolds v0.9.15

Diff since v0.9.14

Added

• using DocumenterInterLinks for links to other Julia packages documentation.
• Implementation of sectional_curvature, sectional_curvature_min and sectional_curvature_max for several manifolds.
• sectional_curvature_matrix function and a tutorial on coordinate-free curvature.

Changed

• default_vector_transport_method for GeneralUnitaryMatrices other than Rotations was changed to ProjectionTransport.

Fixed

• typographical errors in tutorials/working-in-charts.jl.
• several typographical errors in the docs
• unifies to use two backticks `` for math instead of $ further in the docs

Merged pull requests:

• Bump codecov/codecov-action from 3 to 4 (#707) (@dependabot[bot])
• Fix several typos in the docs (#709) (@kellertuer)
• Fix some typos in working-in-charts example. (#710) (@vtjeng)
• Sectional curvature (#711) (@mateuszbaran)
• 📚Switch to using DocumenterInterLinks.jl (#712) (@kellertuer)

v0.9.14

Manifolds v0.9.14

Diff since v0.9.13

Added

• rand on UnitaryMatrices
• rand on arbitrary GroupManifolds and manifolds with IsGroupManifold trait generating points and elements from the Lie algebra, respectively

Merged pull requests:

• More random randomness on random (no actually all) Lie groups (#706) (@kellertuer)

v0.9.13

Manifolds v0.9.13

Diff since v0.9.12

Added

• added the real symplectic Grassmann manifold SymplecticGrassmann
• Introduce the manifold of HamiltonianMatrices and a wrapper for Hamiltonian matrices
• introduce rand(:HamiltonianMatrices)
• extend rand to also rand! for HamiltonianMatrices, SymplecticMatrices and SymplecticStiefel
• implement riemannian_gradient conversion for SymplecticMatrices and SymplecticGrassmann
• the new manifold of MultinomialSymmetricPositiveDefinite matrices
• rand! for MultinomialDoublyStochastic and MultinomialSymmetric

Deprecated

• Rename Symplectic to SimplecticMatrices in order to have a Symplectic wrapper for such matrices as well in the future for the next breaking change.
• Rename SymplecticMatrix to SymplecticElement to clarify that it is the special matrix J_{2n} and not an arbitrary symplectic matrix.

Fixed

• a bug that cause project for tangent vectors to return wrong results on MultinomialDoublyStochastic

Merged pull requests:

• Symplectic Grassmann (#700) (@kellertuer)
• Multinomial randomness (#702) (@kellertuer)
• Bump actions/cache from 3 to 4 (#704) (@dependabot[bot])

v0.9.12

Manifolds v0.9.12

Diff since v0.9.11

Merged pull requests:

• Fix var for TranslationGroup (#703) (@mateuszbaran)

Closed issues:

• Vector transport in the embedding (#624)

v0.9.11

Manifolds v0.9.11

Diff since v0.9.10

Merged pull requests:

• Fix 0-index Euclidean just like Circle (#697) (@mateuszbaran)

v0.9.10

Manifolds v0.9.10

Diff since v0.9.9

Merged pull requests:

• Fix an edge case of PT on Circle (#695) (@mateuszbaran)
• Compatibility with RecursiveArrayTools v3 (#696) (@mateuszbaran)

v0.9.9

Manifolds v0.9.9

Diff since v0.9.8

Merged pull requests:

• Unify use of an atol when comparing to zero (#692) (@kellertuer)
• Fix documentation on master (#694) (@kellertuer)

Closed issues:

• Different types of projection (#172)
• Improve default atol when comparing to 0 (#630)
• Ellipsoid manifold (#658)

v0.9.8

Manifolds v0.9.8

Diff since v0.9.7

Fixed

• Improved distribution of random vector generation for rotation matrices and complex circle.

Merged pull requests:

• Update CI status badge (#687) (@sethaxen)
• Improve random tangent generation on complex circle and rotation matr… (#689) (@mateuszbaran)

Closed issues:

• Possible issues with random elements of CircleGroup? (#686)
• Improve rand for tangent vectors on SpecialOrthogonal(2) (#688)

v0.9.7

Manifolds v0.9.7

Diff since v0.9.6

Fixed

• Fixed is_flat for CholeskySpace and SymmetricPositiveDefinite with LogCholeskyMetric #684.

Merged pull requests:

• is_flat returns true for Cholesky space and SPD with log-Cholesky met… (#685) (@SimonKvantdator)

Closed issues:

• is_flat(::CholeskySpace) and is_flat(::MetricManifold{ℝ,<:SymmetricPositiveDefinite,LogCholeskyMetric}) return false (#684)

v0.9.6

Manifolds v0.9.6

Diff since v0.9.5

Fixed

• Fixed real coefficient basis for complex circle (an issue exposed by JuliaManifolds/ManifoldsBase.jl#173).
• Fixed VeeOrthogonalBasis test for non-real manifolds.

Merged pull requests:

• Adapt to recent vee/hat change in ManifoldsBase (#680) (@mateuszbaran)