### Boole’s Rings

- Unifying themes in Ramsey Theory – BIRS 2018 December 3, 2018 Mike Pawliuk – Mathematics
- The rearrangement and subseries numbers: how much convergence suffices for absolute convergence? Mathematics Colloquium, University of Münster, January 2019 November 26, 2018 Joel David Hamkins
- An infinitary-logic-free proof of the Barwise end-extension theorem, with new applications, University of Münster, January 2019 November 26, 2018 Joel David Hamkins
- A new proof of the Barwise extension theorem, without infinitary logic, CUNY Logic Workshop, December 2018 November 26, 2018 Joel David Hamkins
- Preserving Properness November 23, 2018 Asaf Karagila

### Comments on Boole’s Rings

- Comment on The hierarchy of logical expressivity by Stan Letovsky December 9, 2018 Comments for Joel David Hamkins
- Comment on The rearrangement number by The rearrangement and subseries numbers: how much convergence suffices for absolute convergence? Mathematics Colloquium, University of Münster, January 2019 | Joel David Hamkins November 26, 2018 Comments for Joel David Hamkins
- Comment on Lectures on the Philosophy of Mathematics, Oxford, Michaelmas 2018 by Joel David Hamkins November 9, 2018 Comments for Joel David Hamkins
- Comment on Lectures on the Philosophy of Mathematics, Oxford, Michaelmas 2018 by Artem Kaznatcheev November 8, 2018 Comments for Joel David Hamkins
- Comment on Alan Turing, On computable numbers by Joel David Hamkins October 13, 2018 Comments for Joel David Hamkins

# Tag Archives: Reverse Mathematics

## Computable roots of computable functions

Here are several interesting results from computable analysis: Theorem 1. If $f$ is a computable function from $\mathbb{R}$ to $\mathbb{R}$ and $\alpha$ is an isolated root of $f$, then $\alpha$ is computable. Corollary 2. If $p(x)$ is a polynomial over … Continue reading

## 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