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Publications
- A note on the theory of positive induction, ID*1 (joint with M. Rathjen), Archive for Mathematical
Logic 49 (2), 275-281, 2009. [pdf]
- Reverse mathematics and well-ordering principles: A pilot study (joint with M.
Rathjen), Annals of Pure and Applied Logic 160, 231-237, 2009. [pdf]
- Relative computability and the proof-theoretic strength of some
theories, PhD thesis, University of Leeds, 2008. [pdf]
- Post's programme for the Ershov hierarchy (joint with S. B. Cooper, G.
Barmpalias, F. Stephan), Journal of Logic and Computation 17, 1025-1040,
2007. [pdf]
- Immunity properties and the n-c.e. hierarchy (joint with S. B. Cooper, G.
Barmpalias), Lecture Notes in Computer Science 3959, 694-703, Springer-Verlag
Berlin Heidelberg, 2006. [pdf]
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