Ockham is a totally acceptable spelling which requires all three: C, K and H... See: https://en.wikipedia.org/wiki/Occam's_razor https://en.wikipedia.org/wiki/

Ockham is a totally acceptable spelling which requires all three: C, K and H... See: https://en.wikipedia.org/wiki/Occam's_razor https://en.wikipedia.org/wiki/Occam's_razor https://en.wikipedia.org/wiki/William_of_Ockham https://en.wikipedia.org/wiki/William_of_Ockham