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Single Idea 9574

[filed under theme 27. Natural Reality / B. Modern Physics / 4. Standard Model / a. Concept of matter ]

Full Idea

An 'atomless gunk' is defined to be an individual possessing no parts that are atoms.

Gist of Idea

'Gunk' is an individual possessing no parts that are atoms

Source

Charles Chihara (A Structural Account of Mathematics [2004], App A)

Book Ref

Chihara,Charles: 'A Structural Account of Mathematics' [OUP 2004], p.352


A Reaction

[Lewis coined it] If you ask what are a-toms made of and what are ideas made of, the only answer we can offer is that the a-toms are made of gunk, and the ideas aren't made of anything, which is still bad news for the existence of ideas.


The 17 ideas from 'A Structural Account of Mathematics'

We can replace existence of sets with possibility of constructing token sentences [Chihara, by MacBride]
Mathematical entities are causally inert, so the causal theory of reference won't work for them [Chihara]
We only know relational facts about the empty set, but nothing intrinsic [Chihara]
What is special about Bill Clinton's unit set, in comparison with all the others? [Chihara]
The set theorist cannot tell us what 'membership' is [Chihara]
Sentences are consistent if they can all be true; for Frege it is that no contradiction can be deduced [Chihara]
Analytic geometry gave space a mathematical structure, which could then have axioms [Chihara]
If a successful theory confirms mathematics, presumably a failed theory disconfirms it? [Chihara]
The mathematics of relations is entirely covered by ordered pairs [Chihara]
In simple type theory there is a hierarchy of null sets [Chihara]
A pack of wolves doesn't cease when one member dies [Chihara]
No scientific explanation would collapse if mathematical objects were shown not to exist [Chihara]
I prefer the open sentences of a Constructibility Theory, to Platonist ideas of 'equivalence classes' [Chihara]
ZFU refers to the physical world, when it talks of 'urelements' [Chihara]
The null set is a structural position which has no other position in membership relation [Chihara]
Realists about sets say there exists a null set in the real world, with no members [Chihara]
'Gunk' is an individual possessing no parts that are atoms [Chihara]