Books on Amazon
Possibility/situation/situation semantics/semantics of possible worlds/Hintikka: both approaches agree that situations may have several dimensions, e.g. temporal, spatial, and relations of overlap, inclusion etc. A crucial dimension is the following:
Intentionality/Intensionality/Hintikka: Intentionality and intensionality require the consideration of a background of alternatives (worlds, alternative situations).
Solution: there must be a dimension of pure possibility.
Possibility/Dimension/Hintikka: the dimension of the possibility is simply introduced by a pure space-time structure, then we have branches of time that have the same temporal (and if necessary spatial) coordinates as the set s of all situations.
Intensional/Possibility/Hintikka: when intensional concepts come in, we need a world which is just like a given world, except that everything there is possible. ((s) But it is indistinguishable from the world in which all this is given.
Semantics of possible worlds/situation semantics/Hintikka: then there is the question of how the two still differ at all._____________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.
Jaakko and Merrill B. Hintikka
The Logic of Epistemology and the Epistemology of Logic Dordrecht 1989
J. Hintikka/M. B. Hintikka
Untersuchungen zu Wittgenstein Frankfurt 1996