# changes, 1.12

• new packages:
• Seminormalization, a package by Bernard Serbinowski and Karl Schwede for computing seminormalization of rings, has been added.
• CoincidentRootLoci, a package by M. C. Brambilla and G. Staglianò for computations with coincident root loci, has been added.
• RelativeCanonicalResolution, a package by Christian Bopp and Michael Hoff for computation of the relative canonical resolution for g-nodal canonical curves with a fixed $g^1_k$, has been added.
• RandomCurvesOverVerySmallFiniteFields, a package by Christian Bopp and Frank-Olaf Schreyer for computation of general canonical curves of genus $\le 15$ over fields with small characteristic, has been added.
• StronglyStableIdeals, a package by Davide Alberelli and Paolo Lella for studying strongly stable ideals related to Hilbert polynomials, has been added.
• SLnEquivariantMatrices, a package by Ada Boralevi, Daniele Faenzi and Paolo Lella for computations related to the paper "A construction of equivariant bundles on the space of symmetric forms", has been added.
• CorrespondenceScrolls, a package by David Eisenbud, Frank-Olaf Schreyer, and Alessio Sammartano, to compute and analyze examples of correspondence scrolls, has been added.
• NCAlgebra, a package by Frank Moore, Andrew Conner, and Courtney Gibbons, implementing data types for noncommutative algebras, has been added.
• SpaceCurves, a package by Frank Schreyer, Mike Stillman, and Mengyuan Zhang, for generation of space curves, has been added.
• ExteriorIdeals, a package by Marilena Crupi and Luca Amata for manipulating monomial ideals over exterior algebras, has been added.
• packages that have been published and certified:
• Resultants, a package by Giovanni Staglianò for resultants and discriminants for multivariate polynomials, has been published.
• SpaceCurves, a package by Frank Schreyer, Mike Stillman, and Mengyuan Zhang, for generation of space curves, has been published.
• ReesAlgebra, a package by David Eisenbud, Amelia Taylor, and Sorin Popescu for computations with Rees algebras, has been published.
• Cremona, a package by Giovanni Staglianò for computations for rational maps between projective varieties, has been published.
• ExteriorIdeals, a package by Marilena Crupi and Luca Amata for manipulating monomial ideals over exterior algebras, has been published.
• improved packages:
• The package VersalDeformations has had a bug fixed. The lifting algorithm would give an error or incorrect output if the tangent cone for the obstruction equations wasn't generated by the lowest order terms of the obstruction equations. This has been remedied by actually calculating the tangent cone, and making appropriate adjustments to the algorithm.
• The package TateOnProducts has been improved. The package implements the method of Tate resolutions, for computing cohomology of sheaves on products of projective spaces, and also the pushforward complex of a sheaf under a map from a variety to a projective space. Tate resolutions on single projective spaces were treated in the package BGG, but the case of a product of projective spaces is much more subtle, since no term of the full Tate resolution is finitely generated.