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Philosophical aspects of logic and set theory; truth status of mathematical axioms; Philosophy of Mathematics; philosophical aspects of mathematics in general; relation of mathematics to philosophy; etc. Consider also posting at http://philosophy.stackexchange.com/, where philosophy-of-mathematics is one of the most popular tags.

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What does the axiom of replacement mean and why should I believe it?

For an argument that the iterative conception implies something weaker than unrestricted Separation (implied by unrestricted Replacement), i.e. $\Sigma_2$ Replacement, see Randall Holmes 2001 http://m …
Flash Sheridan's user avatar
3 votes

Physics and Church–Turing Thesis

To follow up on Michael Beeson’s answer (I’m not allowed to post comments yet), Robin Gandy’s paper was “Church's Thesis and Principles for Mechanisms” in The Kleene Symposium (http://dx.doi.org/10.10 …
Flash Sheridan's user avatar
1 vote

Why should we believe in the axiom of regularity?

You’re not obliged to believe the axiom; see, for instance, https://en.wikipedia.org/wiki/Universal_set.
Flash Sheridan's user avatar