more from this thinker     |     more from this text


Single Idea 13018

[filed under theme 4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / f. Limitation of Size ]

Full Idea

The 'limitation of size' is a vague intuition, based on the idea that being too large may generate the paradoxes.

Gist of Idea

Limitation of Size is a vague intuition that over-large sets may generate paradoxes

Source

Penelope Maddy (Believing the Axioms I [1988], §1.3)

Book Ref

-: 'Journal of Symbolic Logic' [-], p.485


A Reaction

This is an intriguing idea to be found right at the centre of what is supposed to be an incredibly rigorous system.


The 8 ideas with the same theme [sets as only limited by vastness that gives problems]:

Limitation of Size is not self-evident, and seems too strong [Lavine on Neumann]
Limitation of Size is weak (Fs only collect is something the same size does) or strong (fewer Fs than objects) [Boolos, by Potter]
Replacement enforces a 'limitation of size' test for the existence of sets [Bostock]
Limitation of size is part of the very conception of a set [Mayberry]
Limitation of Size is a vague intuition that over-large sets may generate paradoxes [Maddy]
The 'limitation of size' principles say whether properties collectivise depends on the number of objects [Potter]
Limitation of Size: if it's the same size as a set, it's a set; it uses Replacement [Lavine]
Limitation of Size justifies Replacement, but then has to appropriate Power Set [Hossack]