SageMath code and demo for s-weak order and s-permutahedra

You will find here some raw research code and a demo related to the following series of papers: [1] C. Ceballos and V. Pons. The s-weak order and s-permutahedra I: Combinatorics and Lattice Structure [2] C. Ceballos and V. Pons. The s-weak order and s-permutahedra . In 31st International Conference on "Formal Power Series and Algebraic Combinatorics" (FPSAC 2019), volume 82B, Art. 76. Hanover, United States, 2019. Séminaire Lotharingien de Combinatoire. They present examples and implementations of the computations and algorithms described in the papers