Combining Philosophers

Ideas for Rescher,N/Oppenheim,P, George Engelbretsen and Michle Friend

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5 ideas

4. Formal Logic / F. Set Theory ST / 2. Mechanics of Set Theory / b. Terminology of ST

8665	A 'proper subset' of A contains only members of A, but not all of them [Friend]

8672	A 'powerset' is all the subsets of a set [Friend]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set

8677	Set theory makes a minimum ontological claim, that the empty set exists [Friend]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / d. Infinite Sets

8666	Infinite sets correspond one-to-one with a subset [Friend]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

8682	Major set theories differ in their axioms, and also over the additional axioms of choice and infinity [Friend]