|Unicorn example, philosophy: the problem is about linguistic expressions for non-existent objects and principles of using these expressions. In logic it comes to the question of whether sentences containing expressions for non-existent objects are true, false, or senseless. See also Pegasus, nonexistence, reference, truth value, truth conditions, assertibility, meaning, sense, truth value gap.|
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|Unicorn Example||I 609
Unicorn/Pegasus/Existence/Ontology/Frege: "Pegasus" has sense but no meaning (reference) - hence the phrase "Pegasus is a winged horse" cannot be true.
Expressive Vernunft Frankfurt 2000
Begründen und Begreifen Frankfurt 2001