|Existence, philosophy, logic: the fact that there is something to which properties can be attributed. That does not mean that something has to be given immediately or can be perceived by the senses. See also ontology, properties, predicates, existence statements, realism, quantification, ascription.|
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Existence/Chisholm: even the impossible - because of conceivability.
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Chisholm II M.David/L. Stubenberg (Hg) Philosophische Aufsätze zu Ehren von R.M. Chisholm Graz 1986
Features/Existence/Chisholm/Sauer: from consistency principle
:(Ex) "F" has a consistent meaning = Def (Ea) (a = e (F) a = the meaning of "F") - it follows, if a is a consistent property, then there is an entity that is the meaning of the corresponding predicate - problem: that is itself no logical or analytical principle and therefore consistently negatable - so there is a possible world so that (10) "the property of square-ness exists" and also worlds where that is not true.
Die erste Person Frankfurt 1992
Roderick M. Chisholm
Erkenntnistheorie Graz 2004