--- title: "Magma V2.27-8 Patch Notes" canonical: "https://docs.magma-maths.org/patchnotes/2.27-8.html" source: "https://docs.magma-maths.org/patchnotes/2.27-8.md" --- # Magma V2.27-8 Patch Notes ## Algebraic Curves - A bug in `LPolynomial(C)` applied to a certain class of curves has been fixed. Reported by A. Sutherland. ## Algebraic Number Fields - An oversight in which a computed maximal order was not stored on the field has been fixed, resulting in no recomputation of known orders. Reported by L. Combes. - Testing some not yet known to be principal integral ideals of non maximal orders for principality has been fixed. Reported by M. Kirschmer. ## Coding Theory - A crash involving the deletion of codes after [`SymplecticDual`](../CodingTheory/QuantumCodes/inner-products.md#function-symplecticdual-codeadd) had been called has been fixed. Reported by M. Grassl. ## Elliptic Curves - A crash in `MordellWeilGroup` for an elliptic curve defined over a number field has been fixed. Reported by S. Schiavone. ## Finite Fields - A slowdown arising from the creation of a very large number of finite fields with different characteristics has been fixed. ## Groebner Bases - A bug in Groebner basis computation with a large number of variables in the graded case has been fixed. Reported by W. Wemyss. - A crash in the parallel F4 algorithm with the sparse monomial representation (selected when there is a large number of variables) has been fixed. Reported by M. Grassl. ## Groups - A new version of the matrix group [`CompositionTree`](../FiniteGroups/MatrixGroupsOverFiniteFields/composition-tree.md#function-compositiontree-grpmat-fldfin) code has been installed. Code supplied by E. O’Brien. - A bug in [`MinimalDegreePermutationRepresentation`](../FiniteGroups/Groups/category-transfer.md#function-minimaldegreepermutationrepresentation-grp) has been fixed. Reported by E. O’Brien. ## Hyperelliptic Curves - A bug which caused [`ReducedModel`](../ArithmeticGeometry/HyperellipticCurves/creation.md#function-reducedmodel-crvhyp) to hang on some hyperelliptic curves has been fixed. Reported by E. Costa. ## Rings - `&*` when applied to polynomials over a non commutative ring has been fixed. Reported by P. Koprowski.