What are infinite sets and how do they work?
Infinite sets are collections of elements that have no end. For example, the set of all natural numbers is infinite.
Can you give me an example of a countably infinite set?
Sure! The set of all integers is a countably infinite set because you can list them in a sequence: ..., -2, -1, 0, 1, 2, ...
What about uncountably infinite sets?
Uncountably infinite sets, like the set of real numbers, cannot be listed in a sequence. There are more real numbers than integers.
How do we know that some infinities are larger than others?
This is shown through Cantor's diagonal argument, which demonstrates that the set of real numbers cannot be matched one-to-one with the set of natural numbers.
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