Bump v0.16 + Remove old deprecations

CITATION.cff

@@ -8,9 +8,9 @@ authors:
   given-names: "Jutho"
   orcid: "https://orcid.org/0000-0002-0858-291X"
 title: "TensorKit.jl"
-version: "0.15.0"
+version: "0.16.0"
 doi: "10.5281/zenodo.8421339"
-date-released: "2025-10-03"
+date-released: "2025-12-05"
 url: "https://github.com/QuantumKitHub/TensorKit.jl"
 preferred-citation:
   type: article

Project.toml

@@ -1,14 +1,13 @@
 name = "TensorKit"
 uuid = "07d1fe3e-3e46-537d-9eac-e9e13d0d4cec"
-authors = ["Jutho Haegeman"]
-version = "0.15.3"
+authors = ["Jutho Haegeman, Lukas Devos"]
+version = "0.16.0"
 
 [deps]
 LRUCache = "8ac3fa9e-de4c-5943-b1dc-09c6b5f20637"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MatrixAlgebraKit = "6c742aac-3347-4629-af66-fc926824e5e4"
 OhMyThreads = "67456a42-1dca-4109-a031-0a68de7e3ad5"
-PackageExtensionCompat = "65ce6f38-6b18-4e1d-a461-8949797d7930"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ScopedValues = "7e506255-f358-4e82-b7e4-beb19740aa63"
@@ -37,7 +36,6 @@ LRUCache = "1.0.2"
 LinearAlgebra = "1"
 MatrixAlgebraKit = "0.6.0"
 OhMyThreads = "0.8.0"
-PackageExtensionCompat = "1"
 Printf = "1"
 Random = "1"
 SafeTestsets = "0.1"

docs/make.jl

@@ -22,6 +22,7 @@ pages = [
     ],
     "Index" => ["index/index.md"],
     "Appendix" => ["appendix/symmetric_tutorial.md", "appendix/categories.md"],
+    "Changelog" => "Changelog.md",
 ]
 
 mathengine = MathJax3(

docs/src/Changelog.md

@@ -0,0 +1,146 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## Guidelines for updating this changelog
+
+When making changes to this project, please update the "Unreleased" section with your changes under the appropriate category:
+
+- **Added** for new features.
+- **Changed** for changes in existing functionality.
+- **Deprecated** for soon-to-be removed features.
+- **Removed** for now removed features.
+- **Fixed** for any bug fixes.
+- **Performance** for performance improvements.
+
+When releasing a new version, move the "Unreleased" changes to a new version section with the release date.
+
+## [Unreleased](https://github.com/QuantumKitHub/TensorKit.jl/compare/v0.16.0...HEAD)
+
+## [0.16.0](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.16.0) - 2025-12-05
+
+### Added
+
+- `rrule` for `transpose` operation ([#319](https://github.com/QuantumKitHub/TensorKit.jl/pull/319))
+- New functions for multifusion support: `unitspace`, `zerospace`, `leftunitspace`, `rightunitspace`, `isunitspace` ([#291](https://github.com/QuantumKitHub/TensorKit.jl/pull/291))
+- Support for projections and orthogonal complements ([#312](https://github.com/QuantumKitHub/TensorKit.jl/pull/312))
+
+### Changed
+
+- Tensors now no longer print their data by default, only their spaces. Use `blocks(t)` or `subblocks(t)` to inspect data ([#304](https://github.com/QuantumKitHub/TensorKit.jl/pull/304))
+- Updated `left_orth`, `right_orth`, `left_null` and `right_null` interfaces for MatrixAlgebraKit v0.6 ([#312](https://github.com/QuantumKitHub/TensorKit.jl/pull/312))
+- Updated `ishermitian` and `isisometric` implementations ([#312](https://github.com/QuantumKitHub/TensorKit.jl/pull/312))
+- Sector functions now by default use `unit` instead of `one`, `isunit` instead of `isone`, and `dual` instead of `conj` ([#291](https://github.com/QuantumKitHub/TensorKit.jl/pull/291))
+- Reworked TensorOperations implementation to use backend and allocator system ([#311](https://github.com/QuantumKitHub/TensorKit.jl/pull/311))
+- Major documentation update/overhaul ([#289](https://github.com/QuantumKitHub/TensorKit.jl/pull/289))
+- Added symmetric tensor tutorial as appendix ([#316](https://github.com/QuantumKitHub/TensorKit.jl/pull/316))
+- Improved error messages throughout codebase ([#309](https://github.com/QuantumKitHub/TensorKit.jl/pull/309))
+
+### Deprecated
+
+### Removed
+
+- All deprecations from v0.15: old factorization function names (`leftorth`, `rightorth`, `tsvd`, `eig`, `eigh`)
+- Old truncation strategy names (`truncdim`, `truncbelow`)
+- Old factorization struct types (`OrthogonalFactorization`)
+- Old constructor syntaxes and deprecated `rand*` function names
+
+### Fixed
+
+- Avoid unnecessary copy in `twist` for tensors with bosonic braiding ([#305](https://github.com/QuantumKitHub/TensorKit.jl/pull/305))
+- Small fixes and typos ([#295](https://github.com/QuantumKitHub/TensorKit.jl/pull/295))
+
+## [0.15.3](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.15.3) - 2025-10-30
+
+### Fixed
+
+- Fixed typo in `show(::GradedSpace)` ([#308](https://github.com/QuantumKitHub/TensorKit.jl/pull/308))
+- Updated printing of `ProductSpace{<:Any,0}`
+- Added tests for show methods
+
+## [0.15.2](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.15.2) - 2025-10-28
+
+### Added
+
+- `subblocks` iterator for easier inspection of tensor data ([#304](https://github.com/QuantumKitHub/TensorKit.jl/pull/304))
+
+### Changed
+
+- Tensors no longer print their data by default, only their spaces. Use `blocks(t)` or `subblocks(t)` to inspect data ([#304](https://github.com/QuantumKitHub/TensorKit.jl/pull/304))
+- Updated compatibility to TensorKitSectors v0.3 ([#290](https://github.com/QuantumKitHub/TensorKit.jl/pull/290))
+- Refactored test suite and split into groups ([#298](https://github.com/QuantumKitHub/TensorKit.jl/pull/298))
+
+### Fixed
+
+- Fixed `TruncationIntersection` implementation and test ([#300](https://github.com/QuantumKitHub/TensorKit.jl/pull/300))
+- Avoided unnecessary allocations in rrules for contractions and tensor products ([#306](https://github.com/QuantumKitHub/TensorKit.jl/pull/306))
+
+## [0.15.1](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.15.1) - 2025-10-09
+
+### Fixed
+
+- Small fixes and typo corrections ([#295](https://github.com/QuantumKitHub/TensorKit.jl/pull/295))
+
+## [0.15.0](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.15.0) - 2025-10-03
+
+### Added
+
+- [MatrixAlgebraKit](https://github.com/QuantumKitHub/MatrixAlgebraKit.jl) as new backend for tensor factorizations ([#230](https://github.com/QuantumKitHub/TensorKit.jl/pull/230))
+- `foreachblock(f, t::AbstractTensorMap...)` - uniform interface to iterate through tensor blocks
+- `eig_trunc` and `eigh_trunc` - truncated eigenvalue decompositions
+- `ominus` (and unicode `⊖`) - compute orthogonal complement of a space
+- Backend selection for factorizations - swap algorithms or implementations
+
+### Changed
+
+- `left_orth` and `right_orth` now always output tensors with a single connecting space
+- `left_orth` and `right_orth` now always have connecting space with `isdual=false`
+- Code formatter is now [Runic.jl](https://github.com/fredrikekre/Runic.jl)
+
+### Deprecated
+
+- Factorization functions `leftorth`, `rightorth`, `tsvd`, `eig`, `eigh` in favor of MatrixAlgebraKit variants (`left_orth`, `right_orth`, `svd_compact`, `eig_full`, `eigh_full`)
+- Truncation strategies: `truncdim` (use `truncrank`) and `truncbelow` (use `trunctol`)
+- `OrthogonalFactorization` structs (constructors deprecated to return equivalent MatrixAlgebraKit algorithm structs)
+
+### Removed
+
+- Direct permute-and-factorize operations (incompatible with `permute` vs `braid` distinction)
+- `Polar` decomposition behavior for `left_orth`/`right_orth` (use `left_polar`/`right_polar` instead for `isposdef` R factors)
+
+## [0.14.0](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.14.0) - 2024-12-19
+
+### Added
+
+- `DiagonalTensorMap` type for representing tensor maps with diagonal blocks
+- `reduceddim(V)` function that sums up degeneracy dimensions for each sector
+- New index manipulation functions:
+  - `flip(t, i)`
+  - `insertleftunit(t, i)`
+  - `insertrightunit(t, i)`
+  - `removeunit(t, i)`
+
+### Changed
+
+- Singular values and eigenvalues now explicitly represented as `DiagonalTensorMap` instances
+- SVD truncation now guarantees smaller singular values are removed first, irrespective of sector quantum dimension
+
+## [0.13.0](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.13.0) - 2024-11-24
+
+### Added
+
+- Refactored `TensorMap` constructors to align with Julia `Array` constructors
+- Convenience constructors: `ones`, `zeros`, `rand`, `randn` for tensors
+- TensorOperations v5 support
+
+### Changed
+
+- Scalar type as parameter to `AbstractTensorMap` type: `AbstractTensorMap{E, S, N₁, N₂}`
+- Default way to create uninitialized tensors is now `TensorMap{E}(undef, codomain ← domain)`
+- Behavior of `copy` for `BraidingTensor` to properly instantiate a `TensorMap`
+- TensorKitSectors promoted to separate package
+- `TensorMap` data structure now consists of single vector with blocks as views
+- `FusionTree` vertices now only use `Int` labels for `GenericFusion` sectors

ext/TensorKitChainRulesCoreExt/constructors.jl

@@ -106,18 +106,6 @@ function ChainRulesCore.rrule(
     return TensorKit.copy_oftype(t, T), copy_oftype_pullback
 end
 
-function ChainRulesCore.rrule(
-        ::typeof(TensorKit.permutedcopy_oftype), t::AbstractTensorMap, T::Type{<:Number}, p::Index2Tuple
-    )
-    project = ProjectTo(t)
-    function permutedcopy_oftype_pullback(Δt)
-        invp = TensorKit._canonicalize(TupleTools.invperm(linearize(p)), t)
-        return NoTangent(), project(TensorKit.permute(unthunk(Δt), invp)), NoTangent(),
-            NoTangent()
-    end
-    return TensorKit.permutedcopy_oftype(t, T, p), permutedcopy_oftype_pullback
-end
-
 function ChainRulesCore.rrule(::typeof(Base.convert), T::Type{<:Array}, t::AbstractTensorMap)
     A = convert(T, t)
     function convert_pullback(ΔA)

src/TensorKit.jl

@@ -28,7 +28,6 @@ export FusionTree
 export IndexSpace, HomSpace, TensorSpace, TensorMapSpace
 export AbstractTensorMap, AbstractTensor, TensorMap, Tensor # tensors and tensor properties
 export DiagonalTensorMap, BraidingTensor
-export TruncationScheme
 export SpaceMismatch, SectorMismatch, IndexError # error types
 
 # Export general vector space methods
@@ -84,6 +83,7 @@ export left_orth, right_orth, left_null, right_null,
     exp, exp!,
     eigh_full!, eigh_full, eigh_trunc!, eigh_trunc, eigh_vals!, eigh_vals,
     eig_full!, eig_full, eig_trunc!, eig_trunc, eig_vals!, eig_vals,
+    eigen, eigen!,
     ishermitian, project_hermitian, project_hermitian!,
     isantihermitian, project_antihermitian, project_antihermitian!,
     isisometric, isunitary, project_isometric, project_isometric!,
@@ -148,8 +148,6 @@ import Base.Meta
 
 using Random: Random, rand!, randn!
 
-using PackageExtensionCompat
-
 # Auxiliary files
 #-----------------
 include("auxiliary/auxiliary.jl")
@@ -248,13 +246,4 @@ include("planar/macros.jl")
 @specialize
 include("planar/planaroperations.jl")
 
-# deprecations: to be removed in version 1.0 or sooner
-include("auxiliary/deprecate.jl")
-
-# Extensions
-# ----------
-function __init__()
-    return @require_extensions
-end
-
 end