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Is there a good (free) online resource for learning axiomatic set theory? I am no mathematician, but I have basic familiarity with calculus, combinatorics, and basic computability theory. Wikipedia, in typical encyclopaedia fashion, is a bit too dense, and lacks exercises.

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    what is wrong with reading a good old fashioned book ? – Rene Schipperus Jan 20 '17 at 12:59
  • You can start with Stephen Simpson, Foundations of Mathematics (2009). – Mauro ALLEGRANZA Jan 20 '17 at 13:02
  • "An old-fashioned book" is generally more difficult to access. – blackbadger Jan 20 '17 at 13:03
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    Almost all math books can be found online these days. – Rene Schipperus Jan 20 '17 at 13:05
  • @MauroALLEGRANZA thank you! Although it seems most axiomatic set theory starts a bit late in the book, and runs for only a few dozen pages before the book is over :) But it definitely seems a good starting point. Anything AFTER that? – blackbadger Jan 20 '17 at 13:06
  • @ReneSchipperus then great, a free online math book is a free online resource and qualifies as an answer. But what's wrong with being open about other resources too? – blackbadger Jan 20 '17 at 13:08
  • Nothing is wrong, its just that I got the impression from your question that you wanted a website. For those people serious about learning set theory the books Kunnen, Set theory, and Jech, Set Theory remain the two basic resources. I would recommend starting with Kunnen. Of course there are other books but eventually one ends up looking at those two. – Rene Schipperus Jan 20 '17 at 13:13
  • @ReneSchipperius I ... found a copy of the Kunen (Kunen, right? Not KunNen) online :) It's from 1980. Isn't it a bit old? But delving into it it seems to have far more substance than any other suggestion I received so far. I would accept it as an answer! – blackbadger Jan 20 '17 at 13:16
  • I was once in the library and there were two students looking for a calculus text. One student found a book and his friend looked at the date and said "1989 that is a bit old isnt it ?" and the student replied "Dude, calculus was invented in then 18 th century." – Rene Schipperus Jan 20 '17 at 13:21

2 Answers2

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I think the best book is "Axiomatic Set theory" by Patrick Suppes.

Also note this PDF is quite good (by Robert Andre). Hope it helps.

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There is a preliminary version of the introductory text on Set Theory by W. Weiss in his website. It is a very nice material.

Once you cope with the basic stuff and after you've seen some material on Martin's Axiom, you could check out the notes of Forcing by Itay Neeman. There he refers to some notes by J. Palumbo, but I think those are not available online any more. There were pretty useful for me.


Concerning book suggestions, I completely agree with @ReneSchipperus. Now, there is a 2011 Set Theory by Kunen. It's a slightly different book on exactly the same subject; perhaps more streamlined. Both the old and new are excellent choices, along with Jech's 3rd edition. For more elementary suggestions, see this answer.