Philosophy Dictionary of Arguments

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Completeness: Completeness typically refers to the property of a system where all necessary elements or operations exist, ensuring that every statement is either provable or disprovable within that system. See also Incompleteness, Definiteness, Determination, Distinction, Indistinguishability.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

J. Bigelow on Completeness - Dictionary of Arguments

I 134
Completeness/Bigelow/Pargetter: completeness occurs when our explicit semantics guarantees all and only the extroverted asserted theorems. That is, our semantics does not read anything into our language, which is not already there.
>Semantics/Bigelow.
Def "extroverted axiomatics"/Terminology/Bigelow/Pargetter: an axiomatics that is developed in an already existing language.
>Axioms
, >Axiom systems.
I 135
Completeness/correspondence theory/Bigelow/Pargetter: the existence of completeness proofs provides a kind of correspondence theory.
>Correspondence theory, >Proofs, >Provability.
Completeness: for us, we can show that all the propositions that are true to our semantics in all possible worlds can be derived.
>Derivation, >Derivability, >Possible worlds.
I 137
Def completeness theorem/Bigelow/Pargetter: is a theorem that proves that if a proposition in a certain semantics is assuredly true, this proposition can be proved as a theorem. How can we prove this? How can we prove that each such proposition is a theorem?
Solution: we prove the contraposition of the theorem: Instead:

If a is assuredly true in semantics, a is a theorem.

We prove:

If a is not a theorem, it is not assuredly true in semantics.

We prove this by finding an interpretation according to which it is false.
>Falsification, >Verification, >Verifiability.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Big I
J. Bigelow, R. Pargetter
Science and Necessity Cambridge 1990


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Ed. Martin Schulz, access date 2024-04-16
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