Combining Texts

Ideas for 'The Nature of Things', 'Frege versus Cantor and Dedekind' and 'Commentary on 'De Anima''

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts

---

3 ideas

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

9986	The null set was doubted, because numbering seemed to require 'units' [Tait]

4. Formal Logic / F. Set Theory ST / 7. Natural Sets

9406	A class is natural when everybody can spot further members of it [Quinton]

9984	We can have a series with identical members [Tait]