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Personally, I think it makes perfect sense. Take two sets A and B. If we can assign every element in A to a different one in B, we say that |A|≤|B|. Makes per
by petters 6y ago
Personally, I think it makes perfect sense.
Take two sets A and B. If we can assign every element in A to a different one in B, we say that |A|≤|B|.
Makes perfect sense for normal, finite sets, right? As it happens, this definition extends to infinite sets as well.
- erodommoc 6y agoRight, but many things make sense for finite sets that don't make sense for infinite sets. Just because you can extend that definition doesn't mean that it's "true" for infinite sets.