Reuben Hersh on the Growth of Mathematical Knowledge: Kant, Geometry, and Number Theory

Emily Grosholz ()
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Emily Grosholz: Pennsylvania State University, Department of Philosophy

A chapter in Humanizing Mathematics and its Philosophy, 2017, pp 97-114 from Springer

Abstract: Abstract In his reflective writings about mathematics, Reuben Hersh has consistently championed a philosophy of mathematical practice. He argues that if we pay close attention to what mathematicians really do in their research, as they extend mathematical knowledge at the frontier between the known and the conjectured, we see that their work does not only involve deductive reasoning. It also includes plausible reasoning, “analytic” reasoning upward that seeks the conditions of the solvability of problems and the conditions of the intelligibility of mathematical things. We use, he argues, “our mental models of mathematical entities, which are culturally controlled to be mutually congruent within the research community. These socially controlled mental models provide the much-desired “semantics” of mathematical reasoning” (Hersh 2014b, p. 127). Every active mathematician is familiar with a large swathe of established mathematics, “an intricately interconnected web of mutually supporting concepts, which are connected both by plausible and by deductive reasoning,” that include “concepts, algorithms, theories, axiom systems, examples, conjectures and open problems,” and models and applications. Thus, “the body of established mathematics is not a fixed or static set of statements. The new and recent part is in transition” (Ibid, pp. 131–2).

Keywords: Established Mathematics; Reflective Writing; Mathematical Things; Formal Intuition; Unique Prime Decomposition (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1007/978-3-319-61231-7_10

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