### Boole’s Rings

- On set-theoretic mereology as a foundation of mathematics, Oxford Phil Math seminar, October 2018 September 21, 2018 Joel David Hamkins
- Parallels in universality between the universal algorithm and the universal finite set, Oxford Math Logic Seminar, October 2018 September 21, 2018 Joel David Hamkins
- The rearrangement number: how many rearrangements of a series suffice to validate absolute convergence? Warwick Mathematics Colloquium, October 2018 September 20, 2018 Joel David Hamkins
- The Stable Core September 11, 2018 Victoria Gitman
- The propagation of error in classical geometry constructions September 10, 2018 Joel David Hamkins

### Comments on Boole’s Rings

- Comment on The inclusion relations of the countable models of set theory are all isomorphic by On set-theoretic mereology as a foundation of mathematics, Oxford Phil Math seminar, October 2018 | Joel David Hamkins September 21, 2018 Comments for Joel David Hamkins
- Comment on Set-theoretic mereology by On set-theoretic mereology as a foundation of mathematics, Oxford Phil Math seminar, October 2018 | Joel David Hamkins September 21, 2018 Comments for Joel David Hamkins
- Comment on Algebraicity and implicit definability in set theory by Ehrenfeuchtâ€™s lemma in set theory | Joel David Hamkins September 21, 2018 Comments for Joel David Hamkins
- Comment on The rearrangement number: how many rearrangements of a series suffice to validate absolute convergence? Warwick Mathematics Colloquium, October 2018 by Joel David Hamkins September 21, 2018 Comments for Joel David Hamkins
- Comment on The rearrangement number: how many rearrangements of a series suffice to validate absolute convergence? Warwick Mathematics Colloquium, October 2018 by Klaus Loehnert September 21, 2018 Comments for Joel David Hamkins

# Author Archives: Carl Mummert

## An incompleteness theorem for β_{n} models

My first paper was “An incompleteness theorem for $\beta_n$ models” with Stephen Simpson [1]. It’s a short paper, but the idea is very pretty. We know that the incompleteness theorem implies there are strange models of arithmetic, but these models … Continue reading

Posted in Papers, Research
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## AMS/ASL Special Session on Alan Turing

I arrived home yesterday from the 2012 Joint Mathematics Meetings in Boston, where I was a co-organizer of the AMS/ASL Special Session on the Life and Legacy of Alan Turing. The talks were wonderful, and the session went very smoothly, … Continue reading

Posted in Meetings
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## The logic of Reverse Mathematics

This post is about a research idea I have been thinking about which is quite different from my usual research. It’s an example of a project with an “old fashioned” feel to it, as if it could have been studied … Continue reading

## Moving to WordPress

For a while I have been thinking about migrating to a content management system for my web page. Previously I had a script I wrote that was essentially a simply wiki to let me edit pages from any web browser … Continue reading

Posted in Math on the web
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