I am seeing substantial amounts of both sense and nonsense in this thread. I suggest that anyone who wants to talk about set theory first learn what it is.
The Wikipedia article is somewhat wordy (i.e. made of words, rather than mathematics), and Mathworld is unusably fragmented. The Stanford Encyclopedia is good, but for anyone seriously interested I would suggest a book such as Devlin’s “The Joy of Sets”.
I am seeing substantial amounts of both sense and nonsense in this thread. I suggest that anyone who wants to talk about set theory first learn what it is.
The Wikipedia article is somewhat wordy (i.e. made of words, rather than mathematics), and Mathworld is unusably fragmented. The Stanford Encyclopedia is good, but for anyone seriously interested I would suggest a book such as Devlin’s “The Joy of Sets”.