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| Name: gap-xmod | Distribution: openSUSE Tumbleweed |
| Version: 2.95 | Vendor: openSUSE |
| Release: 1.1 | Build date: Thu Jul 10 15:40:40 2025 |
| Group: Productivity/Scientific/Math | Build host: reproducible |
| Size: 3763793 | Source RPM: gap-xmod-2.95-1.1.src.rpm |
| Packager: https://bugs.opensuse.org | |
| Url: https://gap-packages.github.io/xmod/ | |
| Summary: GAP: Crossed Modules and Cat1-Groups | |
The XMod package provides a collection of functions for computing with crossed modules and cat1-groups, their derivations and sections, morphisms of these structures, and higher-dimensional generalisations.
GPL-2.0-or-later
* Thu Jul 10 2025 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.95
* Added `PreXModWithObjectsByBoundaryAndAction`
* Make the new groupoids 1.77 a prerequisite and revise material
on double groupoids to agree with the changes in gap-groupoids.
* Tue Jul 08 2025 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.94
* Added a temporary fix to work with gap-groupoids 1.77
* Mon Apr 28 2025 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.93
* Added sub-crossed square and sub-cat2-group operations
* Simplified the construction of crossed pairings so that
files map2arg.{gd,gi} can be removed
* Implemented (Inner)ActorCat1Group
* Added AutomorphismPermGroup method for cat1-groups
* Renamed PermAutomorphismAsXModMorphism as
PermAutomorphismAs2dGroupMorphism and added cat1-group method
* Added WhiteheadRegularGroup and WhiteheadGroupIsomorphism
* Removed the unused CompositeDerivation (= WhiteheadProduct)
* Removed the unused (List)InverseDerivations
* Renamed WhiteheadGroupGeneratingDerivations as ...UpMappings
* Added WhiteheadGroupInverseIsomorphism
* Tue Jan 23 2024 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.92
* Added methods for WhiteheadXMod etc. for xmods which are not
permanent xmods
* Now using the NC version of PreImagesRepresentative
* Sun Jun 25 2023 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.91
* added a chapter on double groupoids with operations
EnhancedBasicDoubleGroupoid, DoubleGroupooidWithZeroBoundary
* added PreXModWithTrivialRange
* Sat Feb 11 2023 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.89
* added RegularActionHomomorphism(Object/2DimensionalGroup)
* Sat Nov 19 2022 Jan Engelhardt <jengelh@inai.de>
- Update to release 2.88
* Lots of new and renamed functions
* Mon Dec 25 2017 jengelh@inai.de
- Update to new upstream release 2.6.4
* fixed tests to work with both 4r8 and dev in 3 options
* removed attribute AutoGroup (=Range(XModAction)) for xmods
* added operations SinglePiecePreXModWithObjects(NC)
* added Root2dGroup for prexmods with objects
* ImageElmXModAction now works for xmods of groupoids
* added operation ImageElmXModAction
* renamed test files and made them independent
* Fri Sep 08 2017 jengelh@inai.de
- Update to new upstream release 2.62
* Replaced PreXModIsomorphismByIsomorphisms by the more general
IsomorphismByIsomorphisms; then functions such as
IsomorphismPerm2DimensionalGroup rewritten to use it.
* Added IsomorphismByIsomorphisms for pre1-cat-groups
* New functions added for crossed square <-> cat2-group:
ConjugationActionForCrossedSquare;
ElementsRelationsForSemidirectProduct
* Added CoproductInfo for coproducts FactorXMod now
FactorPreXMod (ditto NaturalMorphisms)
* Added Is2dGroupMorphismData and modified construction
functions Method for IsNormal now applies to precrossed
modules added PeifferSub2dGroup
* Added operation DiagonalCat1 and example S3xS3 => S3
* Added operation CoproductXMod and files `coprod.g`,
`coprod.tst`
* Sat Apr 29 2017 jengelh@inai.de
- Update to new upstream release 2.59
* added property IsEndomorphismPreCat1
* modified IsomorphismPerm2dGroup for PreCat1 objects
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