This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics articles
Latest comment: 9 years ago1 comment1 person in discussion
Exactly the same construction works for graphs embedded on other orientable surfaces. That should be added. McKay (talk) 05:46, 20 November 2014 (UTC)Reply