Philosophy Lexicon of Arguments

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Accessibility, philosophy: accessibility is an expression of a relationship between possible worlds. For example, a world with IT technology is not accessible from a world where the wheel has not yet been invented. See also modal logic, possible worlds, systems, S 4/S 5, knowledge, transitivity, counterpart theory, centered worlds, cross world identity.

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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.

 
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Books on Amazon
I Berka 161
Definition accessibility/possible world/Kripke/Berka: The relation R exists if the world w2 is possible with reference to world w1 in the sense that every sentence which is true in w2 is possible in w1 - Necessity/Kripke: A sentence is necessary in a world w1 if it is true in all worlds accessible from w1. - Definition normal world/Kripke: A maximum consistent quantity of sentences in which at least one statement is necessary - Definition non-normal world/Kripke: in those, every sentence of type LB is false.


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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.

K I
S.A. Kripke
Name und Notwendigkeit Frankfurt 1981

K III
S. A. Kripke
Outline of a Theory of Truth (1975)
In
Recent Essays on Truth and the Liar Paradox, R. L. Martin (Hg), Oxford/NY 1984


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Ed. Martin Schulz, access date 2017-11-18