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All the ideas for '04: Gospel of St John', 'Modal Logic' and 'The Same F'

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10 ideas

2. Reason / A. Nature of Reason / 2. Logos

6294	In the beginning was the Word, and the Word was with God, and the word was God [John]

3. Truth / A. Truth Problems / 2. Defining Truth

8821	Jesus said he bore witness to the truth. Pilate asked, What is truth? [John]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / b. System K

14970

Normal system K has five axioms and rules [Cresswell]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / c. System D

14971

D is valid on every serial frame, but not where there are dead ends [Cresswell]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / g. System S4

14972

S4 has 14 modalities, and always reduces to a maximum of three modal operators [Cresswell]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5

14973

In S5 all the long complex modalities reduce to just three, and their negations [Cresswell]

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

14976

Reject the Barcan if quantifiers are confined to worlds, and different things exist in other worlds [Cresswell]

8. Modes of Existence / A. Relations / 4. Formal Relations / a. Types of relation

14974

A relation is 'Euclidean' if aRb and aRc imply bRc [Cresswell]

9. Objects / F. Identity among Objects / 3. Relative Identity

12155

Statements of 'relative identity' are really statements of resemblance [Perry]

10. Modality / A. Necessity / 4. De re / De dicto modality

14975

A de dicto necessity is true in all worlds, but not necessarily of the same thing in each world [Cresswell]