 Mabinogion sheep problem

The Mabinogion sheep problem is a classic problem in mathematical logic and set theory often used in discussions around paradoxes and infinite sets. It draws inspiration from the Welsh collection of tales known as the "Mabinogion," although the connection to the original stories is more thematic than direct. The problem itself involves a scenario with sheep, typically framed in a way that presents a paradox or challenges our intuition about counting infinite sets.