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Ideas of Geoffrey Hellman, by Text

[American, fl. 1989, Professor at the University of Minnesota. An active concert pianist.]

1989 Mathematics without Numbers
p.86 Modal structuralism says mathematics studies possible structures, which may or may not be actualised
p.114 Statements of pure mathematics are elliptical for a sort of modal conditional
p.229 Modal structuralism can only judge possibility by 'possible' models
2007 Structuralism
1 p.537 Maybe mathematical objects only have structural roles, and no intrinsic nature
1 p.537 Structuralism is now common, studying relations, with no regard for what the objects might be