Combining Philosophers
Ideas for Hermarchus, Mark Colyvan and Engelbretsen,G/Sayward,C
expand these ideas
|
start again
|
choose
another area for these philosophers
display all the ideas for this combination of philosophers
6 ideas
4. Formal Logic / A. Syllogistic Logic / 1. Aristotelian Logic
|
13913
|
The four 'perfect syllogisms' are called Barbara, Celarent, Darii and Ferio [Engelbretsen/Sayward]
|
|
13914
|
Syllogistic logic has one rule: what is affirmed/denied of wholes is affirmed/denied of their parts [Engelbretsen/Sayward]
|
4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic
|
13915
|
Syllogistic can't handle sentences with singular terms, or relational terms, or compound sentences [Engelbretsen/Sayward]
|
4. Formal Logic / A. Syllogistic Logic / 3. Term Logic
|
13916
|
Term logic uses expression letters and brackets, and '-' for negative terms, and '+' for compound terms [Engelbretsen/Sayward]
|
4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic
|
17925
|
Showing a disproof is impossible is not a proof, so don't eliminate double negation [Colyvan]
|
|
17926
|
Rejecting double negation elimination undermines reductio proofs [Colyvan]
|