v0.44.2

AbstractAlgebra v0.44.2

Diff since v0.44.1

Merged pull requests:

• Is_unit and is_nilpotent (with tests) (#1933) (@JohnAAbbott)
• Fix show method for MatSpace (#1934) (@fingolfin)
• Re-enable conformance test for residue ring over Z[x] (#1938) (@fingolfin)
• Make is_exact_type and is_domain_type more convenient (#1942) (@fingolfin)
• Version 0.44.2 (#1945) (@fingolfin)

Closed issues:

• isunit for univariate and multivariate polynomials is incorrect over Z/nZ (#11)
• provide interface-conformance testsets (#312)
• Distinguish inexact rings (#860)
• Question about conformance test performing isone(inv(one(R))) (#994)

v0.44.1

AbstractAlgebra v0.44.1

Diff since v0.44.0

Merged pull requests:

• Remove redundant global keyword usage (#1927) (@fingolfin)
• swap_cols and swap_rows for Julia matrices (#1928) (@fingolfin)
• Add is_zero_initialized trait for matrix types (#1929) (@fingolfin)
• Avoid unnecessary matrix zero-initialization (#1930) (@fingolfin)
• Avoid an unnecessary allocation calling permutedims (#1931) (@fingolfin)
• Bump version to 0.44.1 (#1932) (@lgoettgens)

Closed issues:

• f.(A) for a matrix A and a function f? (#259)
• Make MatrixElem belong to AbstractArray{T, 2} (#417)
• Generic.Rings.{elem,parent}_type test (#471)
• gens vs nvars (#596)
• AdditiveGroup <: Group ? (#795)
• should we make isone(::PolynomialElem) and isgen(::PolynomialElem) more correct on zero rings? (#978)
• generating set for the trivial group (#1030)
• Test failure in Generic.Mat.Nullspace (#1120)
• How to convert an univariate polynomial to a multivariate polynomial? (#1503)
• Provide swap_rows, swap_rows! etc. also for Julia matrices? (#1730)

v0.44.0

AbstractAlgebra v0.44.0

Diff since v0.43.12

Merged pull requests:

• Refactor polysubst.jl (#1889) (@lgoettgens)
• Change similar, zero_matrix, ones_matrix to use UndefInitializer constructors (#1909) (@fingolfin)
• fix: multivariate polynomial rings over zero rings (#1910) (@thofma)
• Solve triu (#1920) (@fieker)
• Add generic dispatch for ideal_type (#1924) (@fingolfin)
• Set version to 0.44.0-DEV (#1925) (@fingolfin)
• Set version to 0.44.0 (#1926) (@lgoettgens)

v0.43.12

AbstractAlgebra v0.43.12

Diff since v0.43.11

Merged pull requests:

• Add is_abelian for groups (#1907) (@lgoettgens)
• Use DocMeta.setdocmeta with AbstractAlgebra.doctestsetup (#1908) (@fingolfin)
• fix: univariate polynomial rings over zero rings (#1911) (@thofma)
• Add implication: integral domains are not trivial (#1912) (@fingolfin)
• docs: Generic.ResidueRing -> Generic.EuclideanRingResidueRing (#1913) (@fingolfin)
• Use Random.default_rng() instead of Random.GLOBAL_RNG (#1914) (@fingolfin)
• Add generic is_trivial method for ResidueRing (#1915) (@fingolfin)
• Replace some more instances of GLOBAL_RNG (#1916) (@fingolfin)
• WeakKeyIdDict:fix return value for sizehint! (#1917) (@fingolfin)
• Enable factor(::Rational) (#1918) (@fingolfin)
• Add hash(::LocalizedEuclideanRingElem) (#1919) (@lgoettgens)
• Version 0.43.12 (#1922) (@fingolfin)
• Fix CI in Julia 1.11.2 (#1923) (@fingolfin)

Closed issues:

• Reduce duplication in doctest setup (#1897)

v0.43.11

AbstractAlgebra v0.43.11

Diff since v0.43.10

Merged pull requests:

• Simplify and fix similar and zero for our matrix types (#1890) (@fingolfin)
• Fix snf_with_transform issue over non-domain (#1899) (@fingolfin)
• Adapt to hvcat error type in julia (#1902) (@lgoettgens)
• Use math mode in two places in the manual (#1903) (@fingolfin)
• feat: more generic is_trivial (#1905) (@thofma)
• Add Base.keys(::MatElem) (#1906) (@lgoettgens)

Closed issues:

• Failing matrix test on nightly (#1901)

v0.43.10

AbstractAlgebra v0.43.10

Diff since v0.43.9

Merged pull requests:

• Tweak printing of Julia parent types (#1883) (@fingolfin)
• Make matrix(R::Ring, arr::AbstractMatrix) more useful (#1887) (@fingolfin)
• Get rid of InteractiveUtils dependency (#1888) (@lgoettgens)
• Make @show_special a noop if no attribute storage available (#1891) (@lgoettgens)
• Adapt test_mutating_op_like_(add)mul to work with scalar mul as well (#1892) (@lgoettgens)
• Turn ConstPolyRing example into a doctest (#1894) (@fingolfin)
• Add AbstractAlgebra.doctestsetup() helper and use it, then regenerate doctests so they benefit from @show_name (#1895) (@fingolfin)
• Fix show for PolyRingAnyMap (#1896) (@fingolfin)
• Improve copy & deepcopy for MatSpaceElem (#1898) (@fingolfin)
• Version 0.43.10 (#1900) (@fingolfin)

Closed issues:

• Add more *_type functions (#1264)

v0.43.9

AbstractAlgebra v0.43.9

Diff since v0.43.8

Merged pull requests:

• Add conformance tests for some adhoc operations (#1867) (@fingolfin)
• Bump version to 0.43.9 (#1884) (@lgoettgens)

v0.43.8

AbstractAlgebra v0.43.8

Diff since v0.43.7

Merged pull requests:

• Add adhoc arithmetics for FreeAssociativeAlgebraElem (#1866) (@lgoettgens)
• algorithms/GenericFunctions: x == 0 -> iszero(x) (#1869) (@nsajko)
• julia/Float: x == 0 -> iszero(x) (#1870) (@nsajko)
• julia/Integer: x == 0 -> iszero(x) (#1871) (@nsajko)
• julia/Rational: x == 0 -> iszero(x) (#1872) (@nsajko)
• Replace some custom checks by check_parent (#1874) (@fingolfin)
• Delete redundant isequal method (#1875) (@fingolfin)
• More helpful error for diagonal_matrix (#1876) (@joschmitt)
• Improve adhoc arithmetic for UnivPoly (#1877) (@fingolfin)
• CI: stop testing against Julia 1.9 (#1878) (@fingolfin)
• Require one-based indexing in _check_dim (#1879) (@lgoettgens)
• Some enhacements to is_loaded_directly (#1880) (@lgoettgens)
• Fix UnivPoly adhoc subtraction (#1881) (@lgoettgens)
• Bump version to 0.43.8 (#1882) (@lgoettgens)

Closed issues:

• Scalar multiplication of FreeAssociativeAlgebraElems does not work as expected from printing (#1865)
• most or all occurences of x == 0 could be improved by replacing with iszero(x) (#1868)

v0.43.7

AbstractAlgebra v0.43.7

Diff since v0.43.6

Merged pull requests:

• test_Ring_interface: pass reps to test_NCRing_interface (#1863) (@fingolfin)
• Widen signature of MatSpaceElem constructor (#1864) (@lgoettgens)

v0.43.6

AbstractAlgebra v0.43.6

Diff since v0.43.5

Merged pull requests:

• Better unsafe funcs for UnivPoly and a few others (#1838) (@fingolfin)
• Add is_finite methods for various ring types (#1842) (@fingolfin)
• Provide a default isapprox method for ring elements (#1843) (@fingolfin)
• Unsafe funcs for FreeAssAlgebra, Poly, MPoly (#1847) (@lgoettgens)
• Merge MatSpace and Generic.MatSpace (#1849) (@lgoettgens)
• Some MatrixRing fixes (#1852) (@lgoettgens)
• Require non-zero coefficient ring in universal polynomial ring (#1858) (@lgoettgens)
• Require non-zero coefficient ring in free associative algebra (#1859) (@lgoettgens)
• Require non-zero coefficient ring in power series ring (#1860) (@lgoettgens)
• Require non-zero coefficient ring in laurent/puiseux constructions (#1861) (@lgoettgens)
• Version 0.43.6 (#1862) (@fingolfin)

Closed issues:

• Add mutating arithmetics for FreeAssociativeAlgebraElem (#1819)
• Merge Generic.MatSpace and MatSpace (#1840)
• Prevent negative dimension matrix rings (#1851)