### Boole’s Rings

- Quote by Yoda in The Last Jedi February 17, 2018 dcernst.github.io
- Hyperbinary numbers and fraction trees February 6, 2018 Samuel Coskey
- Modal principles of potentialism, Oxford, January 2018 February 1, 2018 Joel David Hamkins
- Written elsewhere, booknet canada edition: Equations ≠ Math January 30, 2018 Peter Krautzberger
- The subseries number January 23, 2018 Joel David Hamkins

### Comments on Boole’s Rings

- Comment on The emerging zoo of second-order set theories by Victoria Gitman February 16, 2018 Comments for Victoria Gitman
- Comment on The emerging zoo of second-order set theories by Joel David Hamkins February 15, 2018 Comments for Victoria Gitman
- Comment on Prikry forcing may add a Souslin tree by saf February 14, 2018 Comments for Assaf Rinot
- Comment on Prikry forcing may add a Souslin tree by Mohammad February 14, 2018 Comments for Assaf Rinot
- Comment on Math for eight-year-olds: graph theory for kids! by Revisiting Joel David Hamkins’s “Graph Theory for Kids” | Mike's Math Page February 11, 2018 Comments for Joel David Hamkins

# Category Archives: Research

## 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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## Talk on the existence of connected components of graphs

This week I am attending a seminar at Dagstuhl on Measuring the Complexity of Computational Content: Weihrauch Reducibility and Reverse Analysis. This post has slides from my talk and some blog-only remarks to expand on them.

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## Talk on Reverse Mathematics and the Modal Logic of Reverse Mathematics

This is a transcription of notes from a talk I gave on November 1, 2013 to the interdisciplinary logic seminar at the University of Connecticut. I gave a general introduction to Reverse Mathematics and then spoke about my work with … Continue reading

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## Internal combinatorics and uniform reducibility

This post is a set of notes from a talk I gave on December 5th for the discrete mathematics seminar at Marshall University. I want to argue that logical analysis can reveal the “internal combinatorics” of theorems, using some recent … Continue reading

Posted in Musings, Research, Talks
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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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## 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