|Jackson, Frank C.
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Frank C. Jackson
|Intensions||Stalnaker I 16
Definition Propositional concepts/Stalnaker: propositional concepts are functions of possible worlds on truth values. When an utterance in a possible world is associated with a propositional idea, one can define with it two different propositions: A-Intension and C-Intension (Terminology by Jackson).
C: The propositional thought
X: The possible world
U: The utterance
Definition C-Intension/Jackson: is c (x), expressed by u in x. ((s) whereby the semantics in world x causes the content c to be expressed, which may differ from what can be meant in another world). So relative to the possible world.
Definition A-Intension/Jackson: the A-Intension is defined solely by the propositional idea. ((s) that what is meant.) (Independent of possible worlds).
F. C. Jackson
From Metaphysics to Ethics: A Defence of Conceptual Analysis Oxford 2000
Ways a World may be Oxford New York 2003