@misc{Lexicon of Arguments, title = {Quotation from: Lexicon of Arguments – Concepts - Ed. Martin Schulz, 28 Mar 2024}, author = {Simons,Peter M.}, subject = {Operators}, note = {I 280 Possible Worlds/actuality operator/Simons: with an an actuality operator we can avoid reference to possible worlds, e.g. if there is a (non-empty) set in a world and all of its elements also exist in the other world, then there is the set itself in that world. Then without possible worlds, we can write: CE N (a) N1(M(Ea u (x)[x ε a ⊃ A1 (E!x)] ⊃ Ea). That is, when a part of b is in a world, then also in each world, in which b exists. >Actual world, >Actuality.}, note = { Simons I P. Simons Parts. A Study in Ontology Oxford New York 1987 }, file = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=253378} url = {http://philosophy-science-humanities-controversies.com/listview-details.php?id=253378} }