Combining Texts

Ideas for 'Philosophy of Logic', 'Ontology' and 'Intro to 'Philosophy of Logic''

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

display all the ideas for this combination of texts

---

6 ideas

4. Formal Logic / A. Syllogistic Logic / 1. Aristotelian Logic

18953

Modern notation frees us from Aristotle's restriction of only using two class-names in premises [Putnam]

4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic

18949

The universal syllogism is now expressed as the transitivity of subclasses [Putnam]

4. Formal Logic / C. Predicate Calculus PC / 2. Tools of Predicate Calculus / a. Symbols of PC

18952

'⊃' ('if...then') is used with the definition 'Px ⊃ Qx' is short for '¬(Px & ¬Qx)' [Putnam]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic

9456	Modal logic is multiple systems, shown in the variety of accessibility relations between worlds [Jacquette]

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

7689	The modal logic of C.I.Lewis was only interpreted by Kripke and Hintikka in the 1960s [Jacquette]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / a. Types of set

18958

In type theory, 'x ∈ y' is well defined only if x and y are of the appropriate type [Putnam]