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Problem of quantities / Field: e.g. definition of distance with congruence and "between" but without numbers - not "distance three times as large as ..." - e.g. acceleration: not - "twice as much as" - I 198 P.o.qu. / relationism: e.g. takes a whole bunch of infinite families of comparative acceleration predicates - that is the reformulated version -> Movement.
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