---
title: "Magma V2.28-24 Patch Notes"
canonical: "https://docs.magma-maths.org/patchnotes/2.28-24.html"
source: "https://docs.magma-maths.org/patchnotes/2.28-24.md"
---

<a id="magma-v2-28-24-patch-notes"></a>
# Magma V2.28-24 Patch Notes

## Commutative Algebra

- A problem where primary decomposition was very slow in small characteristic has been fixed.  Reported by Yongyuan Huang.

## Differential Rings

- A crash in creating differential rings recursively has been fixed. Reported by Lewis Combes.

## Elliptic Curves

- A bug in MordellWeilGroup when the elliptic curve is not given by a minimal model has been fixed. Reported by Adam Logan.

## Hyperellptic Curves

- A package error related to to genus-3 hyperelliptic curve functions has been fixed.  Reported by Ryo Ohashi.

## Matrix Groups

- A crash in [`IsSolubleByFinite`](../FiniteGroups/MatrixGroupsOverInfiniteFields/virtual_tests.md#function-issolublebyfinite-grpmat) has been fixed.

## Modular Curves

- A bug in X0NQuotient when the modular curve X0(N) has genus 1 has been fixed. Reported by Timo Keller.

## Permutation Groups

- A new intrinsic [`Homogeneity`](../FiniteGroups/PermutationGroups/actions.md#function-homogeneity-grpperm) has been added. This gives the maximal $k$ such that the group acts transitively on all $s$-subsets of the domain for $1 łe s łe k$. Prompted by Asher Auel.
- A bug in [`TwoTransitiveGroupIdentification`](../FiniteGroups/PermutationGroups/identification.md#function-twotransitivegroupidentification-grpperm) has been fixed.

## Quadratic Fields

- `PicardGroup` of a `RngQuad` now uses the implementation for `RngOrd` so that the map returned has as preimage.
- `IsQuadratic` can now handle non simple fields. Reported by David Craven.
- Coercing quadratic elements into cyclotomic fields when the field is constructed in a way other than [`QuadraticField`](../GlobalFields/QuadraticFields/creation.md#function-fldquad-quadraticfield) has been fixed. Reported by David Craven.

## Quaternion Algebras

- A hang in the intrinsic function `QuaternionAlgebra(I::RngOrdIdl, S::SeqEnum[PlcNumElt])` has been fixed.  Reported by Eloi Torrents Juste.