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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.

2 votes

Are all mathematical theorems necessarily true?

Charles wrote: Robert Hanna (Kant's Theory of Judgment, SEP 2009, sect. 2.2.2) interprets Kant as saying that "logically possible worlds are nothing but maximal logically consistent sets of concep …
Neel Krishnaswami's user avatar
6 votes

Badiou and Mathematics

There's an interesting review of Badiou's "Number and Numbers" at the Notre Dame Philosophical Review by John Kadvany.
Neel Krishnaswami's user avatar
5 votes
Accepted

Defining variable, symbol, indeterminate and parameter

Regarding the status of variables, you probably want to look at Chung-Kil Hur's PhD thesis "Categorical equational systems: algebraic models and equational reasoning". Roughly speaking, he extends the …
Neel Krishnaswami's user avatar
31 votes
Accepted

How do they verify a verifier of formalized proofs?

Is there such a "dumb" system around? If yes, do formalization projects use it? If not, do they recognize the need and put the effort into developing it? Or do they have other means to make their s …
Neel Krishnaswami's user avatar
10 votes

Were Bourbaki committed to set-theoretical reductionism?

The difficulties in formalizing categorical reasoning in set theory are actually pretty simple to understand -- it's just an annoying incompatibility in how the notion of size is used in practice in c …
Neel Krishnaswami's user avatar
65 votes
Accepted

Is there any formal foundation to ultrafinitism?

Wikipedia also says that Troelstra said in 1988 that there were no satisfactory foundations for ultrafinitism. Is this still true? Even if so, are there any aspects of ultrafinitism that you can get …
Neel Krishnaswami's user avatar
31 votes

What is Realistic Mathematics?

At the other side, existence of large cardinals, non-measurable subsets of the reals, etc. are not (immediately) useful for such a study. I don't know about non-measurable subsets, but large card …
Neel Krishnaswami's user avatar
16 votes

Logic in mathematics and philosophy

I agree with Timothy and Andrej's answers, and will complement them by suggesting a few books by philosophers and philosophically-inclined logicians which I have found very interesting. I am sure the …
Neel Krishnaswami's user avatar