--- title: "Magma V2.23-11 Patch Notes" canonical: "https://docs.magma-maths.org/patchnotes/2.23-11.html" source: "https://docs.magma-maths.org/patchnotes/2.23-11.md" --- # Magma V2.23-11 Patch Notes ## $p$-adic Rings and their extensions - Error checking of input to `Exp` has been improved. Reported by C. Fieker. ## Algebraic Function Fields - A fix has been made to `ClassNumber` of a function fields to avoid division by zero. Reported by A. Etropolski. - The degree of the different divisor has been fixed for fields having more than 2 relative extensions in their representation. Reported by C. Quitte. ## Cohomology - A crash in [`CohomologyGroup`](../FiniteGroups/CohomologyAndExtensions/cohomology-groups.md#function-cohomologygroup-modcoho-rngintelt) over non-standard rings has been fixed. Reported by D. Gvirtz. ## Groebner Bases - A hang in the modular algorithm for certain GB computations over the rational field has been fixed. Reported by M. Stoll. - An incorrect error message when computing GBs of ideals over GF(2) with field polynomials has been fixed. Reported by A. Sutherland. ## Jacobi Motives - Some discrepancies with [`ComplexEvaluation`](../ArithmeticGeometry/HypergeometricMotives/jacmot-functionality.md#function-complexevaluation-jacketmot-rngordidl), and its underlying usage in `Grossencharacter` were fixed. Noted by J. Voight. ## L-series - The `Coefficient` intrinsic for the 1st coefficient always returned 1, even when given a list or coefficient function for which it was nonzero. ## Matrix Algebras - A crash in zero quotient algebras for matrices has been fixed. ## Number Fields - A crash involving the lack of a pre-computed basis for ideals when determining a generator with `IsPrincipal` has been fixed. Reported by M. Kida. - A bug with computing `PicardGroup` of orders has been fixed. Reported by S. Marseglia and fixed by J. Klüners. ## Representation Theory - Problems with accessing the database of characteristic zero irreducible modules have been fixed. Reported by G. Havas. ## System - The `Sleep` intrinsic no longer prints an empty sequence. Reported by N. Bruin. - Listing a signature from the `CompTree` package no longer sets the `"Lattice"` verbose flag. Reported by N. Bruin.