### Boole’s Rings

- Sigma-Prikry II: Iteration Scheme December 4, 2019 Assaf Rinot
- Logic Colloquium Poznan - TBA November 20, 2019 Sandra Müller
- North American Annual Meeting of the ASL - TBA November 19, 2019 Sandra Müller
- Oberseminar mathematische Logik, Bonn - TBA November 18, 2019 Sandra Müller
- Modern class forcing November 13, 2019 Victoria Gitman

### Comments on Boole’s Rings

- Comment on Knaster and friends I: Closed colorings and precalibers by saf November 2, 2019 Comments for Assaf Rinot
- Comment on A relative of the approachability ideal, diamond and non-saturation by On guessing generalized clubs at the successors of regulars | Assaf Rinot October 24, 2019 Comments for Assaf Rinot
- Comment on Solution to my transfinite epistemic logic puzzle, Cheryl’s Rational Gifts by Cheryl’s Rational Gifts: transfinite epistemic logic puzzle challenge! | Joel David Hamkins October 14, 2019 Comments for Joel David Hamkins
- Comment on The propagation of error in classical geometry constructions by Paul Alberti-Strait October 9, 2019 Comments for Joel David Hamkins
- Comment on The modal logic of arithmetic potentialism and the universal algorithm by The $Sigma_1$-definable universal finite sequence | Joel David Hamkins September 30, 2019 Comments for Joel David Hamkins

# Category Archives: Papers

## Reverse Mathematics of Matroids

This post is about the paper Reverse Mathematics of Matroids by Jeff Hirst and me. We look at basis theorems for countable vector spaces, countable graphs, and countable enumerated matroids. These three kinds of structures turn out to be extremely … Continue reading

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## 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

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