Combining Texts

All the ideas for 'Letters to Schlick', 'Vagueness' and 'Elucidation of some points in E.Schrder'

expand these ideas     |    start again     |     specify just one area for these texts

---

5 ideas

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

14238

A class is an aggregate of objects; if you destroy them, you destroy the class; there is no empty class [Frege]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

21597

Logical connectives have the highest precision, yet are infected by the vagueness of true and false [Russell, by Williamson]

7. Existence / D. Theories of Reality / 10. Vagueness / d. Vagueness as linguistic

9051	Since natural language is not precise it cannot be in the province of logic [Russell, by Keefe/Smith]

9054	Vagueness is only a characteristic of representations, such as language [Russell]

19. Language / F. Communication / 6. Interpreting Language / a. Translation

18285

All translation loses some content (but language does not create reality) [Carnap]