Combining Texts
Ideas for
'fragments/reports', 'The Work of a Free Person' and 'Vagueness and Contradiction'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
6 ideas
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
8078
|
Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
|
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 / D. Assumptions for Logic / 2. Excluded Middle
6023
|
Every proposition is either true or false [Chrysippus, by Cicero]
|
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 / 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]
|