1931 – 2010
Reinhardt Grossmann (1931–2010) was a German-American analytic philosopher and professor at Indiana University, primarily known for his systematic work in ontology and the philosophy of mind. Working in the tradition of Austro-American realism shaped by Franz Brentano, Alexius Meinong, and Gustav Bergmann, he developed a rigorous categorial ontology addressing abstract entities, mental acts, and the structure of the world. His later work engaged extensively with the metaphysics of existence, negation, and the ontological status of facts.
Developed a systematic categorial ontology distinguishing individuals, properties, relations, and facts in The Categorial Structure of the World (1983)
Contributed to the ontology of intentionality and mental acts in The Structure of Mind (1965)
Offered a detailed treatment of Meinong's object theory and its realist implications in Meinong (1974)
Advanced a realist epistemology in The Fourth Way: A Theory of Knowledge (1990)
Analyzed the metaphysics of negative truths, absence, and non-existence in The Existence of the World (1992)
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