Combining Texts
Ideas for
'Unconscious Cerebral Initiative', 'Goodbye Descartes' and 'A Completeness Theorem in Modal Logic'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
7 ideas
4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic
8081
|
'No councillors are bankers' and 'All bankers are athletes' implies 'Some athletes are not councillors' [Devlin]
|
4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
8085
|
Modern propositional inference replaces Aristotle's 19 syllogisms with modus ponens [Devlin]
|
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
8086
|
Predicate logic retains the axioms of propositional logic [Devlin]
|
4. Formal Logic / D. Modal Logic ML / 1. Modal Logic
10163
|
Propositional modal logic has been proved to be complete [Kripke, by Feferman/Feferman]
|
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic
10760
|
With possible worlds, S4 and S5 are sound and complete, but S1-S3 are not even sound [Kripke, by Rossberg]
|
4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
16189
|
The variable domain approach to quantified modal logic invalidates the Barcan Formula [Kripke, by Simchen]
|
15132
|
The Barcan formulas fail in models with varying domains [Kripke, by Williamson]
|