vertices_to_crossings

vertices_to_crossings(g: PlanarDiagram, vertices=None, all_crossing_signs=False)

Parameters:

• g

• vertices – list of vertices to convert to crossings, if empty all degree 4- vertices are converted

• all_crossing_signs – if False, just one crossing sign is converted (default CCW convention), otherwise all combinations of crossing signs will be returned

Returns: