Despite being relatively small, my department has three faculty in finite combinatorics, in addition to having me in logic. I recently gave a series of two talks in our seminar to present a broad overview of classical computability theory, and to present some more recent applications to mathematics, via Reverse Mathematics and via Weihrauch Reducibility.

### 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 Ehrenfeucht’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