Combining Texts

All the ideas for 'Events and Their Names', 'The Theory of Objects' and 'The Laws of Thought'

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12 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8083	Boole applied normal algebra to logic, aiming at an algebra of thought [Boole, by Devlin]

7727	Boole's notation can represent syllogisms and propositional arguments, but not both at once [Boole, by Weiner]

4. Formal Logic / E. Nonclassical Logics / 6. Free Logic

8250	So-called 'free logic' operates without existence assumptions [Meinong, by George/Van Evra]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8686	Boole made logic more mathematical, with algebra, quantifiers and probability [Boole, by Friend]

5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof

22277

Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]

7. Existence / B. Change in Existence / 4. Events / c. Reduction of events

8978	Events are made of other things, and are not fundamental to ontology [Bennett]

9. Objects / A. Existence of Objects / 2. Abstract Objects / c. Modern abstracta

8719	There can be impossible and contradictory objects, if they can have properties [Meinong, by Friend]

9. Objects / A. Existence of Objects / 3. Objects in Thought

8971	There are objects of which it is true that there are no such objects [Meinong]

8718	Meinong says an object need not exist, but must only have properties [Meinong, by Friend]

9. Objects / A. Existence of Objects / 4. Impossible objects

7756	Meinong said all objects of thought (even self-contradictions) have some sort of being [Meinong, by Lycan]

15781

The objects of knowledge are far more numerous than objects which exist [Meinong]

26. Natural Theory / C. Causation / 8. Particular Causation / b. Causal relata

10364

Facts are about the world, not in it, so they can't cause anything [Bennett]