Philosophy Lexicon of Arguments

Expansion, philosophy: when expanding theories it comes to the question whether a consistent theory remains consistent when it is expanded. Maximum consistent theories are not expandable. See also axioms, maximum consistent, theories, consistency, maximum.
Author Item Excerpt Meta data
Field, Hartry
Books on Amazon
Expansion I 209
Logic/Independence/Field: what does not go with a set of concepts (e.g. a distinction, a proof) does also not go with an extension of the concepts when the new concepts are merely derived from the old ones only.
I 257
Possibility/Field: modified concept of possibility: "is a possible extension of the actual world" (the real one) - then there are models in which singular terms denote nothing - the extension then provides a term for something that would not have a denotation in the non-extended model - then additional predicate "act" for the distinction - problem: only works outside the modal contexts - solution: truth must define truth in a model relative to another model, which is a sub-model of the first.
II 356
Extension/Theory/Language/Predicate/Field: one cannot simply decide to introduce a new predicate for which the indeterminacy of all extensions does not apply.
III 95 f
Logic 2nd order/Field: E.g. quantifiers like "there are infinitely many" - ((s) quantified over sets) - also not: e.g. "there are fewer Fs than Gs" - ((s) Fs and Gs only definable as sets or properties?).
III 98
Expansion of Logic: Preserves us from a vast area of additionally assumed entities - e.g. "what obeys gravitation theory". - QuineVs: rather accept abstract entities than expand the logic - (Quine in this case pro Platonism).

Fie I
H. Field
Realism, Mathematics and Modality Oxford New York 1989

Fie II
H. Field
Truth and the Absence of Fact Oxford New York 2001

H. Field
Science without numbers Princeton New Jersey 1980

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Ed. Martin Schulz, access date 2017-03-30