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History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.

5 votes
0 answers
940 views

Why are real-valued measurable cardinals never explicitly mentioned in Gödel's "What is Cant...

It is a matter of mathematical folklore that Gödel "entertained the idea of so called stronger axioms of infinity deciding $CH$...." (this quote from Radek Honzik's paper, "Large cardinals and the Co …
Thomas Benjamin's user avatar
45 votes
1 answer
3k views

Hilbert's alleged proof of the Continuum Hypothesis in "On the Infinite"

As is known, Hilbert attempted a proof sketch of the Continuum Hypothesis in the latter part of his paper, "On the Infinite". It is also known that it is false. Has there ever been a published analy …
Thomas Benjamin's user avatar
2 votes
2 answers
457 views

What are the sense and reference of the propositions $R \notin R$, $R \in R$, where $R=\{x \...

In the paper, Aldo Antonelli and Robert May, Frege's new science, Notre Dame J. Form. Log. 41 (2000), no. 3, 242–-270, MR 1943495. the authors give the following quote of Frege, from his paper "Ü …
Thomas Benjamin's user avatar
69 votes
5 answers
9k views

What was Hilbert's view of Gödel's Incompleteness Theorems?

According to Solomon Feferman, in his slide presentation "Three Problems for Mathematics", Hilbert wrote (in regards to Gödel's second incompleteness theorem): ...the end goal [is] to establish as …
Thomas Benjamin's user avatar
3 votes
0 answers
342 views

A Question Regarding Boolean-valued Models

What were the intuitions motivating the creation (or discovery, if you will) of Boolean-valued models? I have searched for the Scott-Solovay paper on the subject, but to no avail. There also seems to …
Thomas Benjamin's user avatar
13 votes
1 answer
2k views

Hausdorff and Naive Set Theory

Erhard Scholz, in his article "Felix Hausdorff and the Hausdorff edition" writes the following: "Hausdorff considered the contemporary attempts to secure axiomatic foundations for set theory as prema …
Thomas Benjamin's user avatar