---
title: "Magma V2.27-2 Patch Notes"
canonical: "https://docs.magma-maths.org/patchnotes/2.27-2.html"
source: "https://docs.magma-maths.org/patchnotes/2.27-2.md"
---

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# Magma V2.27-2 Patch Notes

## Groebner Bases

- A slowdown in the F4 algorithm for ideals with non-degree orders has been fixed.  A crash in multi-threaded F4 has also been fixed. Reported by M. Grassl.
- An incorrect result when computing the lexicographical Groebner basis of a certain type of ideal over the integer ring has been fixed. Reported by N. Katz.
- A hang when computing Groebner bases over medium-size primes has been fixed.  Reported by M Voznyy and C. Rito.
- An bug (causing a hang or incorrect results) when computing Groebner bases of certain types of ideal over medium-size prime finite fields has been fixed.  Reported independently by M. Voznyy and C. Rito.

## Matrices

- A incorrect result for `Kernel` applied to matrices over quaternion algebras has been fixed.  Reported by A. Pieper.
- An incorrect result in `FactoredCharacteristicPolynomial` for a special type of integer matrix has been fixed.  Reported by L. van Geemen.

## Quaternion Algebras

- An crash in [`RightIdealClasses`](../Algebras/QuaternionAlgebras/ideal-theory.md#function-rightidealclasses-algquatord) for certain ideals of orders of quaternion algebra has been fixed.  Reported by M. Masdeu and E. Torrents.