v0.13.0

TensorKit v0.13.0

Diff since v0.12.7

Merged pull requests:

• WIP: redesign tensormap structure (#140) (@Jutho)
• PR review changes (#166) (@lkdvos)
• Treetransformer optimizations (#167) (@lkdvos)
• Small fixes (#169) (@Jutho)
• restore randisometry, add tests and deprecations (#170) (@Jutho)

Closed issues:

• Feature request: a more flexible SVD truncation scheme (#164)
• Question: solving linear equations (#165)

v0.12.7

TensorKit v0.12.7

Diff since v0.12.6

Fixes for some AD behavior and for the extension loading change in Julia 1.11.1

Merged pull requests:

• Add sectorscalartype (#146) (@lkdvos)
• AdjointTensorMap can wrap generic tensor types (#148) (@lkdvos)
• Various improvements and fixes (#149) (@lkdvos)
• Excise TensorKitSectors (#151) (@lkdvos)
• fix typo in exp!(::TensorMap) errormessage (#154) (@VictorVanthilt)
• Remove fishy imports from other extension (#160) (@lkdvos)
• scalar and AdjointTensorMap AD rrules (#161) (@lkdvos)

Closed issues:

• Unexpected Behavior with truncerr(η) and p=Inf Truncation Scheme (#150)
• TensorMap constructor is slow when applied to an array (#155)

v0.12.6

TensorKit v0.12.6

Diff since v0.12.5

Backports of some fixes while we prepare for new versions

Merged pull requests:

• Fix TensorMap constructor for symmetric tensor from dense matrix (#144) (@lkdvos)
• Fix reference to undefined _leftorth! (#145) (@lkdvos)

v0.12.5

TensorKit v0.12.5

Diff since v0.12.4

This update includes various small fixes in the implementations of the AD rules.
Additionally, support was added for eigvals, svdvals, diag and diagm.

Merged pull requests:

• @non_differentiable TensorKit.id (#129) (@tangwei94)
• Add support for eigvals, svdvals and diag, diagm. (#130) (@lkdvos)
• small fix in the backward rule of norm (#131) (@tangwei94)
• Move FiniteDifferences support to package extension (#132) (@lkdvos)
• Refactor ChainRulesCoreExt into separate files (#133) (@lkdvos)
• Soften type restrictions on tsvd kwargs (#134) (@lkdvos)

v0.12.4

TensorKit v0.12.4

Diff since v0.12.3

Merged pull requests:

• Utility and Quality of life for VectorSpaces (#120) (@lkdvos)
• Bump julia-actions/cache from 1 to 2 (#121) (@dependabot[bot])
• Improve warnings in AD rules (#122) (@lkdvos)
• small fix in backward rule for leftorth, rightorth (#123) (@tangwei94)
• Fix rrules for Fermionic symmetries (#126) (@qmortier)
• Fix undefined tol and remove unused variable in QR and LQ pullback (#127) (@leburgel)

Closed issues:

• ComplexSpace constructor from sector-degeneracy pairs similar to that of GradedSpace? (#119)

v0.12.3

TensorKit v0.12.3

Diff since v0.12.2

Merged pull requests:

• Some docs fixes (#103) (@leburgel)
• Bump codecov/codecov-action from 3 to 4 (#104) (@dependabot[bot])
• Docs additions related to constructing a given symmetric TensorMap (#105) (@leburgel)
• Fix typo (#107) (@leburgel)
• Add unicode alternatives: otimes and oplus (#109) (@lkdvos)
• fix single arg fuse (#111) (@Jutho)
• Update ProductSpace constructors with promote/convert (#112) (@lkdvos)
• Bump julia-actions/setup-julia from 1 to 2 (#113) (@dependabot[bot])
• Update postprocessors.jl (#114) (@maartenvd)
• Specify eltype for CU1Irrep product iterator (#115) (@lkdvos)

Closed issues:

• Edge cases for empty ProductSpaces (#102)
• \otimes+TAB in PyJulia (#108)
• fuse inconsistent in handling dual spaces (#110)

v0.12.2

TensorKit v0.12.2

Diff since v0.12.1

Merged pull requests:

• Sectors improvements (#97) (@lkdvos)
• Docs update I (#101) (@lkdvos)

Closed issues:

• Problem with gradient when using tensors with Float64 and ComplexF64 entries (#90)
• Confusing/bugged? index convention for braiding tensors. (#93)

v0.12.1

TensorKit v0.12.1

Diff since v0.12.0

• Improved planar support
• Improved and extended AD rules
• Various small improvements

Merged pull requests:

• rewrite constructbraidingtensor preprocessor (#95) (@Jutho)
• Small fixes (#98) (@lkdvos)

Closed issues:

• Automatic Differentiation support (#63)
• Missing rrules for -(::AbstractTensorMap) and ⊗ (#88)
• difference of @planar and @tensor for fermionic tensors? (#91)
• contractcheck does not work together with braiding symbols (#92)

v0.12.0

TensorKit v0.12.0

Diff since v0.11.2

Merged pull requests:

• Fermion Refactor (#81) (@lkdvos)
• Automatic Differentiation (#82) (@lkdvos)
• Remove field type-parameter for vectorspaces (#83) (@lkdvos)
• CompatHelper: add new compat entry for PackageExtensionCompat at version 1, (keep existing compat) (#84) (@github-actions[bot])
• Cherry-pick small fixes (#87) (@lkdvos)

Closed issues:

• Inconsistent behaviour for tensor contraction (#80)

v0.11.2

TensorKit v0.11.2

Diff since v0.11.1

Merged pull requests:

• Add some missing rrules. (#78) (@leburgel)
• Remove some rrule overloads in light of TensorOperations update (#79) (@leburgel)