User talk:The New Kid

Genus
Hey, it looks like you are calculating the genus of non-orientable polyhedra with the formula $$1-\frac{\chi}{2}$$. This only works for orientable polyhedra, for non-orientable polyhedra the genus is twice the result of that expression. It should be $$2-\chi$$. It seems to have only happened a couple times, and I think I've corrected them all. Thanks. Sycamore916 (talk) 04:01, 20 April 2023 (UTC)