>> The word "infinity" has no context-independent meaning in Mathematics. >> In Complex Analysis it is conventional to compactify C and to refer to >> the added point as oo, but that has noting to do with other uses of >> the symbol. Neither this usage, nor the similar usages for the real >> line, have anything to do with cardinality.
>Ah, it was the problems of cardinality that caused Charlie Dodgson to > write that poem that included this line;
>"He thought he saw an argument that proved he was the Pope."
I know that he is elected by cardinals, but is he himself a cardinal?
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