There are many things called “the Euler formula for polyhedron”, and you’re conflating all of them. Sounds like you missed the point of Proofs and Refutations.
Multiple actual historical versions (such as Cauchy’s proof) are wrong.
There are many things called “the Euler formula for polyhedron”, and you’re conflating all of them. Sounds like you missed the point of Proofs and Refutations.
Multiple actual historical versions (such as Cauchy’s proof) are wrong.