Questions on Coloring
We present few thoughts about coloration an arbitrary print. Some questions are posed. We do not supply answers. In the last section, we compile the open questions. Author(s) Details: Volker Wilhelm Thürey, Bremen, Germany. Please see the link here: https://stm.bookpi.org/RHMCS-V3/article/view/9177 Keywords: Coloring, map, four color theorem