---
title: "Magma V2.22-10 Patch Notes"
canonical: "https://docs.magma-maths.org/patchnotes/2.22-10.html"
source: "https://docs.magma-maths.org/patchnotes/2.22-10.md"
---

<a id="magma-v2-22-10-patch-notes"></a>
# Magma V2.22-10 Patch Notes

## Algebraic Number Fields

- A crash in `OptimizedRepresentation` of an order of a number field has beeen fixed.
- `SimpleExtension` can now be applied to a number field and itself.

## Coding Theory

- A problem computing equivalence of two binary codes reported by M. Kiermaier has been addressed by using a different algorithm. A vararg `Al` has been added to the `IsIsomorphic` algorithm for codes which only applies to binary codes. Setting this to the string “Leon” retains the old algorithm, otherwise the default for binary codes is the “Unger” algorithm.

## Hyperelliptic Curves

- A bug with `Height` of a 2-torsion point on a Jacobian was fixed. Reported by S. Marseglia.

## Lattices

- A problem with the lengths/norms and number of `ShortVectors` was fixed. Reported by M. Stoll.

## Local Fields

- A problem with `NormEquation` of a low-precision element in a higher precision ring was fixed. Reported by S. Marseglia.

## Local Polynomial Rings

- A crash in quotient algebras of local polynomial rings has been fixed.  Reported by G. Blanco.

## Polynomial Rings

- A wrong result in bivariate polynomial factorisation has been fixed.  Reported by M. Zieve.
- A potential crash in [`SmallRoots`](../BasicRings/UnivariatePolynomialRings/operation-element.md#function-smallroots-rngupolelt-rngelt-rngelt) has been fixed.
- Factorization of polynomials has been fixed for fields of fractions of affine algebras over rational function fields.  Reported by E. Ruiz Duarte.
- A crash in polynomial multiplication of very high-degree multivariate polynomials has been fixed.  Reported by X. Roulleau.

## Schemes

- Coercing the zero point into a pointset of an affine scheme now works.
- A crash which occured when constructing a cluster from a point which had coordinates in a ring which did not allow Gröbner basis calculations has been fixed to give an error.