GraphicalModelsMLE, a package by Carlos Amendola, Luis David Garcia Puente, Roser Homs Pons, Olga Kuznetsova, Harshit J Motwani, Elina Robeva, and David Swinarski, for maximum likelihood estimates for graphical statistical models, has been published.
LinearTruncations, a package by Lauren Cranton Heller, David Eisenbud, and Navid Nemati for finding multigraded truncations that give linear resolutions, has been published.
RationalMaps, a package by Karl Schwede, Daniel Smolkin, S. Hamid Hassanzadeh, and C. J. Bott, for working with rational maps, has been published.
NoetherianOperators, a package by Robert Krone, Justin Chen, Marc Harkonen, Yairon Cid-Ruiz, and Anton Leykin, for numerically computing local dual spaces, Hilbert functions, and Noetherian operators, has been published.
Jets, a package by Federico Galetto and Nicholas Iammarino, for computing jets of various algebraic, geometric and combinatorial objects, has been published.
HolonomicSystems, a package by Mahrud Sayrafi, Christine Berkesch, Anton Leykin, and Harrison Tsai for holonomic systems, has been added. The code was originally in the Dmodules package.
BernsteinSato, a package by Anton Leykin and Harrison Tsai for Bernstein-Sato, has been added. The code was originally in the Dmodules package.
PolyominoIdeals, a package by Carmelo Cisto, Francesco Navarra, and Rizwan Jahangir for binomial ideals of collections of cells, has been added.
MatchingFields, a package by Oliver Clarke for matching fields, has been added.
CellularResolutions, a package by Jay Yang and Aleksandra Sobieska for cellular resolutions of monomial ideals, has been added.
SagbiGbDetection, a package by Viktoriia Borovik, Timothy Duff, and Elima Shehu for verifying whether the given generators of an ideal form the Gr"obner basis or whether the given generators of a finitely generated subalgebra of a polynomial ring are the SAGBI basis, has been added.
The html documentation now uses the HTML5 specification.
functionality changed in a way that could break code:
The functions member and mutable have been renamed to isMember and isMutable, respectively. The old names still exist as synonyms, but they may be removed in a future release.
Raising a matrix to the 0th power will now raise an error if the source and target do not agree.
The value of a class's 1 key (used internally for getting multiplicative identities) should now be a function that takes an instance of the class and returns the multiplicative identity rather than the multiplicative identity itself.
Several new functions have been added to for sending code to an M2 process, and the code that is sent is now highlighted briefly as a visual indicator. Refer to the "Macaulay2" dropdown menu in Emacs for more.
File locations that appear in Macaulay2 Interaction buffers are now handled using Compilation mode.
Macaulay2 is now supported in Org Mode using ob-M2.