"Naive Set Theory" is not an official ETSU class. This would be a 3000 level class with potential catalog description: "Gives a introduction set theory covering topics of relations, functions, the Peano Axioms, Axiom of Choice, Zorn's Lemma, well ordering, countable sets, ordinal and cardinal numbers, and cardinal arithmetic. The emphasis is more on concepts than on an axiomatic development." The prerequisite is Mathematical Reasoning (MATH 3000), which also covers some of the topics of this class. A senior/graduate level class that elaborates on the ideas introduced here (and puts more of an emphasis on an axiomatic development) is Introduction to Set Theory. A more advanced class is the graduate level Set Theory class (my online notes for this material are still at the planning stage, as of spring 2023).
Copies of the classnotes are on the internet in PDF format as given below. The "Proofs of Theorems" files were prepared in Beamer and they contain proofs of results which are particularly lengthy (shorter proofs are contained in the notes themselves). The "Printout of Proofs" are printable PDF files of the Beamer slides without the pauses. These notes and supplements have not been classroom tested (and so may have some typographical errors). A copy of the (public domain) book is on Piazza.com.
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