Combining Philosophers

All the ideas for Eubulides, George Boole and Albert Casullo

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14 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]

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]

5. Theory of Logic / L. Paradox / 1. Paradox

6007	If you know your father, but don't recognise your father veiled, you know and don't know the same person [Eubulides, by Dancy,R]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

6006	If you say truly that you are lying, you are lying [Eubulides, by Dancy,R]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / b. The Heap paradox ('Sorites')

6008	Removing one grain doesn't destroy a heap, so a heap can't be destroyed [Eubulides, by Dancy,R]

10. Modality / A. Necessity / 11. Denial of Necessity

20475

Maybe modal sentences cannot be true or false [Casullo]

10. Modality / D. Knowledge of Modality / 1. A Priori Necessary

20476

If the necessary is a priori, so is the contingent, because the same evidence is involved [Casullo]

12. Knowledge Sources / A. A Priori Knowledge / 1. Nature of the A Priori

20471

Epistemic a priori conditions concern either the source, defeasibility or strength [Casullo]

20477

The main claim of defenders of the a priori is that some justifications are non-experiential [Casullo]

12. Knowledge Sources / A. A Priori Knowledge / 4. A Priori as Necessities

20472

Analysis of the a priori by necessity or analyticity addresses the proposition, not the justification [Casullo]

12. Knowledge Sources / A. A Priori Knowledge / 10. A Priori as Subjective

3913	Maybe imagination is the source of a priori justification [Casullo]

13. Knowledge Criteria / A. Justification Problems / 1. Justification / c. Defeasibility

20474

'Overriding' defeaters rule it out, and 'undermining' defeaters weaken in [Casullo]