Bed time with the child of two computer scientists: 3yo: “I want to read to my helicopter and then I will go to sleep.” Me: “You may read one book.” <a book is read to a helicopter> 3yo: “I want to read another book.” Me: “You already read one.” 3yo: “No. That was book zero.”
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Replying to @robinhouston @gillianmsmith
What book is this from, Robin? Computer scientists "count" starting at zero, often even in page numbering, but "many mathematicians"? If you call the isomorphism class of the set {0} "zero", you're in real trouble, since you've got to invent some new name for the class of { }.
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Replying to @_derekwise_ @gillianmsmith
_The Book of Numbers_ by J H Conway and R K Guy.
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A marvelously perceptive and entertaining little volume.
9:25 AM - 29 Apr 2019
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