The most difficult part of the reading was still wrapping my head around the proof. It is going to take me some time to understand it, but it makes since that something that is bigger than the natural numbers is equivalent to the real numbers, but that is not to say that all sets bigger than the natural numbers is equivalent to the real numbers which they showed by looking at the power set of the real numbers.
I found it interesting that the Axiom of Choice and theorem b were equivalent. I guess the book does not go into that much detail. It was also interesting to see a German presenting a "defective" proof, and it took us over 50 years to finally come up with the correct one.
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