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Ideas of Fred Sommers, by Text

[American, fl. 1963, Was at Columbia University, then at Brandeis University.]

1963 Types and Ontology
p.355 p.57 Categories can't overlap; they are either disjoint, or inclusive
2005 Intellectual Autobiography
p.26 'Predicable' terms come in charged pairs, with one the negation of the other
p.26 Sommers promotes the old idea that negation basically refers to terms
Intro p.2 Translating into quantificational idiom offers no clues as to how ordinary thinkers reason
'Category' p.3 Predicates form a hierarchy, from the most general, down to names at the bottom
'Conceptions' p.10 Aristotle places terms at opposite ends, joined by a quantified copula
'Existence' p.19 Truthmakers are facts 'of' a domain, not something 'in' the domain
'How We' p.8 Logic which maps ordinary reasoning must be transparent, and free of variables
'Realism' p.17 Frege takes the existence of horses to be part of their concept
'Realism' p.17 Unfortunately for realists, modern logic cannot say that some fact exists
'Reference' p.16 In standard logic, names are the only way to refer
'Syllogistic' p.14 Predicate logic has to spell out that its identity relation '=' is an equivalent relation