Change log for Magma V2.26-8 (Released 29/9/2021)

Algebraic Function Fields

·A crash in NormEquation for function fields has been fixed. Reported by P. Koprowski who also suggested a fix.

Algebraic Geometry

·A bad slowdown in JacobianMatrix (arising out the function IsSingular) for certain types of schemes has been fixed. Reported by J. Jahnel.

Algebras

·A blowup in time caused in the construction of many algebras with involution has been fixed. Reported by E. O'Brien.

Arithmetic Geometry

·A bug in the Tuitman algorithm for computing zeta functions has been fixed, together with an improvement for certain types of inputs.

Group Theory

·A bug in the normal closure operator for pc-groups has been fixed (it was possible for the operator to return a proper subgroup of the normal closure). Bug reported by D. Roe as an incorrect Kernel of a character.

Representation Theory

·A bug has been fixed in IrreducibleModules(G, RationalField()) for a PC group G, where isomorphic modules were returned.