### Boole’s Rings

- Some thoughts about teaching introductory courses in set theory September 21, 2017 Asaf Karagila
- The set-theoretic universe is not necessarily a class-forcing extension of HOD September 19, 2017 Joel David Hamkins
- Equivalence relations and classification problems, parts 1 and 2 September 19, 2017 Samuel Coskey
- On the classification of automorphisms of trees September 11, 2017 Samuel Coskey
- The hierarchy of second-order set theories between GBC and KM and beyond September 9, 2017 Joel David Hamkins

### Comments on Boole’s Rings

- Comment on Some thoughts about teaching introductory courses in set theory by Harto Saarinen September 24, 2017 Comments for Asaf Karagila
- Comment on Some thoughts about teaching introductory courses in set theory by Dan Saattrup Nielsen September 23, 2017 Comments for Asaf Karagila
- Comment on Some thoughts about teaching introductory courses in set theory by Joseph Van Name September 22, 2017 Comments for Asaf Karagila
- Comment on Every countable model of set theory embeds into its own constructible universe by Incomparable $omega_1$-like models of set theory | Joel David Hamkins September 19, 2017 Comments for Joel David Hamkins
- Comment on Local properties in set theory by Neil Barton September 18, 2017 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