Comment on What are the most mindblowing fact in mathematics?
GooseFinger@lemmy.world 2 years ago
The Banach - Tarski Theorm is up there. Basically, a solid ball can be broken down into infinitely many points and rotated in such a way that that a copy of the original ball is produced. Duplication is mathematically sound! But physically impossible.
sneezycat@sopuli.xyz 2 years ago
Only if you accept the axiom of choice :P