# User talk:The New Kid

## Genus Edit

Hey, it looks like you are calculating the genus of non-orientable polyhedra with the formula . This only works for *orientable* polyhedra, for non-orientable polyhedra the genus is twice the result of that expression. It should be . 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)

- Sorry about that. Just yesterday I was refraining from putting genus on non-orientable polyhedra, today it must have slipped my mind. Thanks for catching that. The New Kid (talk) 04:14, 20 April 2023 (UTC)