Ideas of Achille Varzi, by Theme

[American, fl. 2003, Professor at Columbia University.]

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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

10653

Maybe set theory need not be well-founded

4. Formal Logic / G. Formal Mereology / 1. Mereology

10659

There is something of which everything is part, but no null-thing which is part of everything

10648

Mereology need not be nominalist, though it is often taken to be so

10655

Are there mereological atoms, and are all objects made of them?

9. Objects / C. Structure of Objects / 5. Composition of an Object

10661

'Composition is identity' says multitudes are the reality, loosely composing single things

9. Objects / C. Structure of Objects / 8. Parts of Objects / a. Parts of objects

10649

'Part' stands for a reflexive, antisymmetric and transitive relation

10647

Parts may or may not be attached, demarcated, arbitrary, material, extended, spatial or temporal

10651

If 'part' is reflexive, then identity is a limit case of parthood

10654

The parthood relation will help to define at least seven basic predicates

9. Objects / C. Structure of Objects / 8. Parts of Objects / c. Wholes from parts

10658

Sameness of parts won't guarantee identity if their arrangement matters

10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / b. Conceivable but impossible

10652

Conceivability may indicate possibility, but literary fantasy does not