Combining Texts

All the ideas for 'Isagoge ('Introduction')', 'Individuals in Aristotle' and 'Mathematical Methods in Philosophy'

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11 ideas

5. Theory of Logic / A. Overview of Logic / 9. Philosophical Logic

18739

Three stages of philosophical logic: syntactic (1905-55), possible worlds (1963-85), widening (1990-) [Horsten/Pettigrew]

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

18741

Logical formalization makes concepts precise, and also shows their interrelation [Horsten/Pettigrew]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

18744

Models are sets with functions and relations, and truth built up from the components [Horsten/Pettigrew]

7. Existence / A. Nature of Existence / 1. Nature of Existence

18740

If 'exist' doesn't express a property, we can hardly ask for its essence [Horsten/Pettigrew]

8. Modes of Existence / D. Universals / 1. Universals

15034

Are genera and species real or conceptual? bodies or incorporeal? in sensibles or separate from them? [Porphyry]

9. Objects / E. Objects over Time / 9. Ship of Theseus

16157

Insurance on the original ship would hardly be paid out if the plank version was wrecked! [Frede,M]

10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds

18745

A Tarskian model can be seen as a possible state of affairs [Horsten/Pettigrew]

18747

The 'spheres model' was added to possible worlds, to cope with counterfactuals [Horsten/Pettigrew]

10. Modality / E. Possible worlds / 1. Possible Worlds / b. Impossible worlds

18748

Epistemic logic introduced impossible worlds [Horsten/Pettigrew]

10. Modality / E. Possible worlds / 1. Possible Worlds / e. Against possible worlds

18746

Possible worlds models contain sets of possible worlds; this is a large metaphysical commitment [Horsten/Pettigrew]

18750

Using possible worlds for knowledge and morality may be a step too far [Horsten/Pettigrew]