Witness the evolution of 'V-E+F=2' since Euler's time:
http://www.amazon.com/Proofs-Refutations-Logic-Mathematical-...
Is it right? Is it wrong? What does it mean to even BE a 'face' ?
Although I guess the worst thing that could happen in this situation is you change your explanation of the tattoo, and not the tattoo itself.
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Witness the evolution of 'V-E+F=2' since Euler's time:
http://www.amazon.com/Proofs-Refutations-Logic-Mathematical-...
Is it right? Is it wrong? What does it mean to even BE a 'face' ?
Although I guess the worst thing that could happen in this situation is you change your explanation of the tattoo, and not the tattoo itself.