The function rotate in FatGraph has a weird comportment if the edge e in argument is a loop on a vertex.
For example with vp = (0, 1, 2, 3) and rotate(0) it will raise an error RuntimeError: wrong number of vertices: nv=1 vp=(0,2,3)(1).
We should either raise an exception or determine the expected comportment in this case.
The function
rotateinFatGraphhas a weird comportment if the edge e in argument is a loop on a vertex.For example with
vp = (0, 1, 2, 3)androtate(0)it will raise an errorRuntimeError: wrong number of vertices: nv=1 vp=(0,2,3)(1).We should either raise an exception or determine the expected comportment in this case.