Philosophy Lexicon of Arguments

Disjunction: linking two or more statements by an inclusive "or". The disjunction is only false when all disjuncts are false. Notation v. See also adjunction, alternation, conjunction, compound sentences.

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 Item Excerpt Meta data

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Disjunction of prop > disjunctive predicates/Armstrong: a single predicate "M" could be used for "A or B or C" > "grue"/Armstrong: simplified form: green becomes blue and at the same time blue becomes green - new pair of pred: bleen/grue: nothing changes relative to the pair: green> blue: remains bleen, blue> green. Remains grue - but: a thing that remains blue changes relative to the new pair bleen/grue - Question: what kind of predicates priority?
III 68
Disjunction/Disjunctive Properties/System/Order/F.o.Th./Armstrong: Example, a natural system contains three fundamental laws: Fs are Gs, Hs are Js, Ks are Ls - these are united as follows: we define M: "an F or an H or a K" N: "a G or a J or an L" - then we have a single "fundamental law": "Ms are Ns" - then "F is an N": less informative but apparent improvement: G = J = L: no more information than "F is G v J v L". But if "N" is a true property, then "G", "J", "L" are merely artificial subdivisions (Armstrong pro) ( disjunction, identity) (>grue) - (s) otherwise we would always have to say "yellow or black Banana").
Disjunctive properties: being G or H": ArmstrongVs - Problem: disj. laws: does not the unrealized alternative need to be missing first? - disjunctional predicates always possible, but no real relation

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.

AR II = Disp
D. M. Armstrong

Dispositions, Tim Crane, London New York 1996

D. Armstrong
What is a Law of Nature? Cambridge 1983

> Counter arguments against Armstrong

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Ed. Martin Schulz, access date 2017-09-21