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|Type /Token Identity||II 57
Psychology / type-identity / Field: needs a relation: "two inner occurrences c and d within an organism are of the same type if and only if there is a physical relation R between them, to an appropriate component of the single realization of f in X. t and c in R is to d. "- N.B.: this relation must not be specified. - Psychology / Field: does not need a notion of type-identity between events in different organisms within an organism.
Realism, Mathematics and Modality Oxford New York 1989
Truth and the Absence of Fact Oxford New York 2001
Science without numbers Princeton New Jersey 1980