---
title: "Magma V2.28-11 Patch Notes"
canonical: "https://docs.magma-maths.org/patchnotes/2.28-11.html"
source: "https://docs.magma-maths.org/patchnotes/2.28-11.md"
---

<a id="magma-v2-28-11-patch-notes"></a>
# Magma V2.28-11 Patch Notes

## Curves

- A crash in [`HasPointsEverywhereLocally`](../ArithmeticGeometry/HyperellipticCurves/cyclic-covers.md#function-haspointseverywherelocally-rngupolelt-rngintelt) where the base ring is a number field has been fixed.  Reported by D. Zureick-Brown.
- A missing error check for `IsEmpty` with the `Smooth` parameter has been added.  Reported by D. Zureick-Brown.

## Elliptic Curves

- A crash in `EllipticCurve` when given a certain type of projective curve has been fixed.  Reported by M. Zieve.

## Matrix groups

- A bug in `Order` for matrices with entries in quaternion algebras has been fixed.  Support for groups defined over quaternion algebras has also been improved (including for the case that the base field is not the rational field).  Reported by S. Waldron.

## Power Series Rings

- A result for `IsWeaklyEqual` inconsistent with `IsWeaklyZero` for recursively defined power series rings has been fixed.  Reported by K. Keating.

## System

- An error involving bad filename expansion in [`AttachSpec`](../MagmaLanguage/FunctionsProceduresAndPackages/package.md#function-attachspec-monstgelt) has been fixed.  Reported by M. Grassl.