---
title: "Magma V2.24-2 Patch Notes"
canonical: "https://docs.magma-maths.org/patchnotes/2.24-2.html"
source: "https://docs.magma-maths.org/patchnotes/2.24-2.md"
---

<a id="magma-v2-24-2-patch-notes"></a>
# Magma V2.24-2 Patch Notes

## Coding Theory

- A crash in `IsPure` for quantum codes has been fixed.

## Coherent Sheaves

- The saturation process for coherent sheaves, as used internally and explicitly through [`SaturateSheaf`](../AlgebraicGeometry/Sheaves/accessors.md#function-saturatesheaf-shfcoh-ref), has been fixed. The error caused the full module computed for the sheaf to be too large in some cases. (Fix added in the initial V2.24 release).

## Commutative Algebra

- The algorithm to compute radicals of multivariate polynomial ideals of positive dimension has been greatly sped up for a large class of inputs.  Problem instance provided by M. Reid.

## Curves

- A crash when constructing places from a point on a curve has been fixed.
- A bug has been fixed in the Shanks group order routine, used in some cases to compute the order of the Jacobian of a hyperelliptic curve over a finite field. This could cause either crashes or wrong answers. Reported by E. Gonzalez Jimenez.
- The incorrect setting of the `GeometricallyIrreducible` attribute when setting the `IsNonsingular` attribute on an affine curve has been fixed.

## Elliptic Curves over Function Fields

- A bug with computing the `MordellWeilGroup` when the order of the torsion group was not coprime to the extension degree of the field of the geometric rank was fixed. Reported by A. Landesman.

## Function Fields

- The computation of the norm of some elements having product representation with negative exponents has been fixed.
- Coercion between equal non-simple orders has been fixed.

## Galois Groups

- The computation of Galois groups over Number Fields was improved by using the discriminants of subfields.
- Precision computations when considering a subfield have been improved. Reported by S. Marseglia.

## Invariant Theory

- A hang in `FundamentalInvariants` applied to certain invariant rings has been fixed.  Reported by U. Thiel.

## L-Series

- A crash from an empty array in the internal GammaSeries has been fixed.

## Lattices

- Various lattice functions involving integral lattices (such as enumeration) now use information about the evenness of a lattice when applicable. Noted by M. Kirschmer and G. Nebe.

## Lie Theory

- A crash when comparing elements of Lie algebras with elements of vector spaces has been fixed.

## Modular Symbols

- A crash in `NewformDecomposition` involving very large number fields has been fixed.  Reported by A. Sutherland.

## Module Theory

- The function `IsSelfDual` has been added for KG-modules.
- The Meataxe algorithm has been improved in the case that the result quotient module has large dimension.

## Number Fields

- Coercion between equal non-simple orders has been fixed.

## Profiler

- A crash that prevented use of the profiler has been fixed.

## Real Numbers

- The deprecated [`LinearRelation`](../BasicRings/RealAndComplexFields/operation-element.md#function-linearrelationlabel) intrinsic now accepts sequences and vectors over the reals. Noted by D. Kohel.

## Series Rings

- A crash in the `Sqrt` computation of a series over a non-field has been fixed.
- Error checking has been improved in ensuring that unramified extensions are constructed only from inertial polynomials. Reported by N. Müller.

## System

- The `exit` (and [`quit`](../MagmaLanguage/StatementsAndExpressions/startup-interrupt-quit.md#literal-literal-quit-quit)) directive can now take an argument giving the desired exit status.