--- title: "Magma V2.28-13 Patch Notes" canonical: "https://docs.magma-maths.org/patchnotes/2.28-13.html" source: "https://docs.magma-maths.org/patchnotes/2.28-13.md" --- # Magma V2.28-13 Patch Notes ## Algebraic Number Theory - Some crashes in [`LMFDBLabel`](../GlobalFields/NumberFieldsAndOrders/ideal.md#function-lmfdblabel-rngordidl) for ideals of orders of number fields have been fixed. Reported by D. Roe. - Some crashes in `OptimizedRepresentation` involving the dynamic extension of precision for roots of the defining polynomial have been fixed. Reported by A. Brumer and A. Pacetti. ## Commutative Algebra - An obscure crash in radical decomposition of multivariate ideals over the rational field (coming from [`L2Quotients`](../FinitelyPresentedGroups/FPGroups/quotient.md#function-l2quotients-grpfp)) has been fixed Reported by E. O’Brien. - An incorrrect result in Groebner basis computation over the integer ring (coming from `MinimalAssociatedPrimes`) has been fixed. Reported by E. O’Brien. - The computation of Groebner bases of integer rings or non-fields has been improved when there is a large redundancy in the input. Example input given by R. Bommel. ## Curves - A crash in `ZetaFunction` has been fixed. Reported by E. Costa. - A crash in maps involving point sets of curves has been fixed. Reported by N. Swanson. ## Groups - A bug in testing an automorphism of a pc-group for being an inner automorphism `IsInner` has been fixed. Bug reported by D. Roe. - A bug in [`GroupName`](../FiniteGroups/Groups/operation.md#function-groupname-grp) (incorrectly naming a chief factor) has been fixed. Bug reported by D. Roe. - A bug in the construction of automorphisms of a pc-group has been fixed. Bug reported by D. Roe as problems with [`Holomorph`](../FiniteGroups/AutomorphismGroups/holomorphs.md#function-holomorph-grp), `OuterFpGroup`, and the construction of invalid automorphisms. - A crash when calling [`IsCharacter`](../RepresentationTheory/CharactersOfFiniteGroups/element.md#function-ischaracter-algchtrelt) on a generalised character of norm 1 has been fixed. Reported by K. Andersen. - A crash when using the `!!` operator with permutation groups defined on non-standard supports has been fixed. Reported by F. Manners. - A problem when using [`IdentifyGroup`](../FiniteGroups/DatabasesOfGroups/smlgps-database.md#function-grpdata-identifygroup) has been fixed. Bug report by D. Roe. ## Local Fields - A bug in `FrobeniusElement` due to p-adic precision has been fixed. Reported by J. Jones.