Articles in Journals

  1. Almost complete sets [pdf]
    (with Klaus Ambos-Spies, Wolfgang Merkle and Sebastiaan A. Terwijn)
    Theoretical Compter Science 306:177-194, 2003.
  2. Kolmogorov-Loveland randomness and stochasticity [pdf]
    (with Woflgang Merkle, Joseph Miller, André Nies, and Frank Stephan)
    Annals of Pure and Applied Logic, 138(13):183210, 2005.
  3. On selection functions that do not preserve normality [pdf]
    (with Wolfgang Merkle)
    To appear in Theory of Computing Systems.
  4. Schnorr dimension [pdf]
    (with Rodney G. Downey and Wolfgang Merkle)
    Accepted for publication in Mathematical Structures in Computer Science.

Articles in Conference Proceedings

  1. Effective Baire category concepts [pdf]
    (with Klaus Ambos-Spies)
    Proc. Sixth Asian Logic Conference 1996, pp. 13--29, Singapore University Press, 1998.
  2. Almost complete sets
    (with Klaus Ambos-Spies,Wolfgang Merkle and Sebastiaan A. Terwijn)
    STACS 2000 (Lille), LNCS 1770, pp. 419--430, Springer, 2000.
  3. Hausdorff dimension in exponential time [pdf]
    (with Klaus Ambos-Spies, Wolfgang Merkle, and Frank Stephan)
    Proc. 16th Conference on Computational Complexity, pp. 210--217, IEEE Computer Society, 2001.
  4. On selection functions that do not preserve normality
    (with Wolfgang Merkle)
    Mathematical foundations of computer science 2003, LNCS 2747, pp. 602--611, Springer, 2003.
  5. Kolmogorov-Loveland randomness and stochasticity
    (with Wolfgang Merkle, Joseph Miller, Andre Nies, and Frank Stephan)
    STACS 2005 (Stuttgart), LNCS 3404, pp. 422--433, Springer, 2005.
  6. Effective Hausdorff dimension [pdf]
    (with Frank Stephan)
    Baaz, Friedman, Krajicek (eds.), Logic Colloquium '01, Association for Symbolic Logic, 2005.
  7. Schnorr dimension
    (with Rod Downey and Wolfgang Merkle)
    Computability in Europe, LNCS 3526, pp. 96--105, Springer, 2005.


  1. Topologische Spiele und resourcenbeschränkte Baire-Kategorie [pdf]
    Diploma Thesis, Universität Heidelberg, 1997.
  2. Computability and Fractal Dimension[pdf]
    Doctoral Dissertation, Universität Heidelberg, 2004.