Changelog for hspray

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to the Haskell Package Versioning Policy.

0.1.0.0 - 2022-12-11

First release.

0.1.1.0 - 2022-12-12

• New functions toList, sprayTerms and bombieriSpray.

• New operation .^, to multiply a spray by an integer.

• Added some unit tests.

0.1.2.0 - 2023-02-24

New function derivSpray, to differentiate a spray.

0.1.3.0 - 2023-08-29

• Powers(..) is now exported.

• Completed the README to show how to deal with symbolic coefficients.

0.2.0.0 - 2024-03-14

• New functions prettySpray' and prettySprayXYZ.

• New function substituteSpray.

• New function sprayDivision, to perform the division of a spray by a list of sprays.

• New function groebner, to compute a Groebner basis of a list of sprays.

• New function isSymmetricSpray, to check whether a spray is a symmetric polynomial.

• New function isPolynomialOf, to check whether a spray can be expressed as a polynomial of a given list of sprays.

0.2.1.0 - 2024-03-22

• New functions permuteVariables and swapVariables.

• New function resultant, to compute the resultant of two sprays.

• New function subresultants, to compute the subresultants of two sprays.

0.2.1.1 - 2024-03-25

• Improved the documentation.

• Flipped the order of appearance of the terms in the output of the prettySpray functions.

0.2.2.0 - 2024-03-26

• Fixed an error in esPolynomial, which resulted to a bug in isSymmetricSpray.

0.2.3.0 - 2024-03-28

• New unit tests.

• Fixed resultant and subresultants: the variables of the sprays they return were incorrect.

• New function gcdQX, to compute the greatest common divisor of two univariate sprays with rational coefficients.