Banach-Tarski paradox




<mathematics> It is possible to cut a solid ball into finitely many pieces (actually about half a dozen), and then put the pieces together again to get two solid balls, each the same size as the original.

This paradox is a consequence of the Axiom of Choice.



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balun
bamf
Banach algebra
Banach inverse mapping theorem
Banach space
 Axiom of Choice
 banana label
banana problem
bandwidth
bang
bang on