Full Idea
Central to naturalism about mathematics are 'indispensability arguments', to the effect that some part of mathematics is indispensable to our best physical theory, and therefore we ought to take that part of mathematics to be true.
Gist of Idea
Mathematics should be treated as true whenever it is indispensable to our best physical theory
Source
Michèle Friend (Introducing the Philosophy of Mathematics [2007], 6.1)
Book Reference
Friend,Michèle: 'Introducing the Philosophy of Mathematics' [Acumen 2007], p.128
A Reaction
Quine and Putnam hold this view; Field challenges it. It has the odd consequence that the dispensable parts (if they can be identified!) do not need to be treated as true (even though they might follow logically from the dispensable parts!). Wrong!