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A Sage compatible Python module to manipulate and simplify grid diagrams.
Examples and instructions can be found in the two Jupyter notebooks "Grid_introduction" and "Crossing_changes_and_bands".
For more details we refer to the associated paper "GridPyM: a Python module to handle grid diagrams" by Agnese Barbensi and Daniele Celoria.
To install, write pip install GridPythonModule in a terminal.
To import, write in a Python terminal import GridPythonModule, and from GridPythonModule import * to import its functions.
Requirements: Python3.
The following packages are needed: matplotlib, sympy, random2
List of available functions: 'ascending_cusps', 'available_knots', 'available_legendrian_knots', 'check_grid', 'coherent_bs', 'commute_columns', 'commute_rows', 'connected_sum', 'convert_to_Sage', 'convert_to_braid', 'crossing_number', 'cyclic_shift', 'descending_cusps', 'destabilize', 'destabilize_all', 'disjoint_union', 'draw_grid', 'Gauss_code', 'generate_random_grid', 'generate_torus_link', 'generate_twist_knot', 'generate_unknot', 'generate_unlink', 'grid_length', 'grid_number', 'invert_orientation', 'load_knot', 'load_legendrian_knot', 'mirror_grid', 'number_of_components', 'parallel_copies', 'perform_all_moves', 'rotate', 'rotate_once', 'rotation_number', 'scramble_grid', 'self_linking', 'simplify_grid', 'stabilisation', 'thurston_bennequin', 'uncoherent_bs', 'writhe'.
Testing and coverage Testing is performed by the GridPythonModule_test.py using pytest.