Combining Texts

Ideas for 'fragments/reports', 'Vagueness and Contradiction' and 'Writing the Book of the World'

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

display all the ideas for this combination of texts

---

10 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

14980

There is a real issue over what is the 'correct' logic [Sider]

15000

'It is raining' and 'it is not raining' can't be legislated, so we can't legislate 'p or ¬p' [Sider]

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

15020

Classical logic is good for mathematics and science, but less good for natural language [Sider]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

15029

Modal accounts of logical consequence are simple necessity, or essential use of logical words [Sider]

5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence

9119	No attempt to deny bivalence has ever been accepted [Sorensen]

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

15019

Define logical constants by role in proofs, or as fixed in meaning, or as topic-neutral [Sider]

5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic

9135	We now see that generalizations use variables rather than abstract entities [Sorensen]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

15001

'Tonk' is supposed to follow the elimination and introduction rules, but it can't be so interpreted [Sider]

5. Theory of Logic / L. Paradox / 3. Antinomies

9125	Denying problems, or being romantically defeated by them, won't make them go away [Sorensen]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

9137	Banning self-reference would outlaw 'This very sentence is in English' [Sorensen]