David Armstrong on the Metaphysics of Mathematics

Dialectica 74 (4):113-136 (2020)
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This paper has two components. The first, longer component (sec. 1-6) is a critical exposition of Armstrong’s views about the metaphysics of mathematics, as they are presented in Truth and Truthmakers and Sketch for a Systematic Metaphysics. In particular, I discuss Armstrong’s views about the nature of the cardinal numbers, and his account of how modal truths are made true. In the second component of the paper (sec. 7), which is shorter and more tentative, I sketch an alternative account of the metaphysics of mathematics. I suggest we insist that mathematical truths have physical truthmakers, without insisting that mathematical objects themselves are part of the physical world.

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Tom Donaldson
Simon Fraser University

Citations of this work

Grounding identity in existence.Ezra Rubenstein - 2024 - Philosophy and Phenomenological Research 108 (1):21-41.

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References found in this work

Guide to Ground.Kit Fine - 2012 - In Fabrice Correia & Benjamin Schnieder (eds.), Metaphysical Grounding. Cambridge University Press. pp. 37--80.
Truthmakers, entailment and necessity.Greg Restall - 1996 - Australasian Journal of Philosophy 74 (2):331 – 340.
Truthmaker.John F. Fox - 1987 - Australasian Journal of Philosophy 65 (2):188 – 207.
Aristotle.Jonathan Barnes - 1975 - In Richard Mervyn Hare, Jonathan Barnes & Henry Chadwick (eds.), Founders of Thought. Oxford University Press.

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