Combining Texts

All the ideas for 'Philosophical Logic: Intro to Advanced Topics', 'Darwinian Metaphysics: Species and Essentialism' and 'Psychology from an empirical standpoint'

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11 ideas

4. Formal Logic / A. Syllogistic Logic / 1. Aristotelian Logic
The four 'perfect syllogisms' are called Barbara, Celarent, Darii and Ferio [Engelbretsen/Sayward]
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
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
Term logic uses expression letters and brackets, and '-' for negative terms, and '+' for compound terms [Engelbretsen/Sayward]
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
In modern logic all formal validity can be characterised syntactically [Engelbretsen/Sayward]
5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
Classical logic rests on truth and models, where constructivist logic rests on defence and refutation [Engelbretsen/Sayward]
5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
Unlike most other signs, = cannot be eliminated [Engelbretsen/Sayward]
5. Theory of Logic / K. Features of Logics / 5. Incompleteness
Axioms are ω-incomplete if the instances are all derivable, but the universal quantification isn't [Engelbretsen/Sayward]
15. Nature of Minds / B. Features of Minds / 4. Intentionality / a. Nature of intentionality
All mental phenomena contain an object [Brentano]
15. Nature of Minds / B. Features of Minds / 5. Qualia / b. Qualia and intentionality
Mental unity suggests that qualia and intentionality must connect [Brentano, by Rey]
27. Natural Reality / G. Biology / 5. Species
Virtually all modern views of speciation rest on relational rather than intrinsic features [Okasha]