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For the same reason that integers have the same cardinality as only odd numbers. You can create a 1:1 mapping between them.
by fighterpilot 5y ago
For the same reason that integers have the same cardinality as only odd numbers. You can create a 1:1 mapping between them.
- bmitc 5y agoNot just one-to-one (injective) but also onto (surjective). :)