Combining Texts

All the ideas for 'Leibniz', 'Sentences' and 'Elucidation of some points in E.Schrder'

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3 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 / A. Overview of Logic / 3. Value of Logic

16728

Logicians acknowledge too few things, while others acknowledge too many [Fitzralph]

9. Objects / F. Identity among Objects / 7. Indiscernible Objects

7566	The Identity of Indiscernibles is really the same as the verification principle [Jolley]