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The GAP package Semigroups

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This PR add several functions which allow for the computation of the character table of a monoid and the Cartan matraix of a monoid which satisfy IsActingSemigroups. The current implementation...

new-feature
waiting-for-creator-input
gap-days-brussels-2025

It's not currently implemented for: * elements of Rees matrix semigroups; * elements of regular Rees 0-matrix semigroups over non-groups; * elements of free bands; * PBRs; * Matrices over...

new-feature

We should try to use the new containers being developed by @limakzi

ci

This PR does what the title says

new-feature

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6. Release notes Sourced from actions/checkout's releases. v6.0.0 What's Changed Update README to include Node.js 24 support details and requirements by @​salmanmkc in actions/checkout#2248 Persist...

major
dependencies
github_actions

Bumps [codespell-project/actions-codespell](https://github.com/codespell-project/actions-codespell) from 2.1 to 2.2. Release notes Sourced from codespell-project/actions-codespell's releases. v2.2 What's Changed Add the config file option and tests by @​rdimaio in codespell-project/actions-codespell#80 Use pip install with...

minor
dependencies
github_actions

Bumps [jidicula/clang-format-action](https://github.com/jidicula/clang-format-action) from 4.15.0 to 4.16.0. Release notes Sourced from jidicula/clang-format-action's releases. v4.16.0 What's Changed ci: Remove Ubuntu 20.04 by @​jidicula in jidicula/clang-format-action#244 build: bump docker/build-push-action from 6.15.0 to 6.16.0...

minor
dependencies
github_actions

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5. Release notes Sourced from actions/upload-artifact's releases. v5.0.0 What's Changed BREAKING CHANGE: this update supports Node v24.x. This is not a breaking change per-se but...

major
dependencies
github_actions