Hence the old mathematicians' joke: I say, I say, I say, can you find an anagram of BANACH-TARSKI? Yes: BANACH-TARSKI BANACH-TARSKI. (Mathematicians' sense o

Hence the old mathematicians' joke: I say, I say, I say, can you find an anagram of BANACH-TARSKI? Yes: BANACH-TARSKI BANACH-TARSKI. (Mathematicians' sense of humour doesn't necessarily resemble anyone else's.)