|Abstract: non-representational - abstract concept, expression of something non-objective - how to demarcate from concrete objects? How to differentiate between abstract entities and concepts, ultimately words.|
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abstract singular term / Tugendhat: cannot be identified in space and time - they are a collective term, which breaks up into different subject areas with different identity criteria
Example 1. attributes 2. states of affairs 3. types 4. institutions and their parts 5. classes 6. numbers
abstract term / Tugendhat: events occur in space and time, but not abstract objects.
Vorlesungen zur Einführung in die Sprachanalytische Philosophie Frankfurt 1976
Philosophische Aufsätze Frankfurt 1992