I am currently a postdoc associated to the *DNRF Niels Bohr Professorship* of
Lars Hesselholt, and part of the
non-commutative geometry group
at the Department of Mathematical Sciences, University of Copenhagen, where I work with
Asger Törnquist.

My Erdös number is 11 (using binary notation).

My research is in set theory; my primary interests are forcing and descriptive set theory.

At times, the list of papers on my arxiv author's page may be more up-to-date than the list below.

- Sigma^1_3-absoluteness in forcing extensions. Master's thesis, University of Vienna, 2004 (adviser: Sy Friedman).
- Lightface Sigma^1_2-indescribable cardinals. Proc. Amer. Math. Soc. 135 (2007), pp. 1213–1222.
- Projective measure without projective Baire. PhD thesis, University of Vienna, 2010 (adviser: Sy Friedman).
- (joint with Sy Friedman and Ralf Schindler) Coding over core models, in: Infinity, Computability, and Metaphysics (Geschke et al., eds.), Festschrift celebrating the 60th birthdays of Peter Koepke and Philip Welch, College Publications, pp. 167–182.
- (joint with Sy Friedman) Easton supported Jensen coding and projective measure without projective Baire. (2014) 142 pages. Submitted.
- (joint with Asger Törnquist) Definable maximal discrete sets in forcing extensions. (2015) 16 pages. Submitted.
- (joint with Asger Törnquist and Vera Fischer) A co-analytic Cohen-indestructible maximal cofinitary group. 20 pages. (2016) To appear in the Journal of Symbolic Logic.
- Definable discrete sets with large continuum. 26 pages. (2016)
- On Horowitz and Shelah's maximal eventually different family 6 pages. (2017)

- Compactness of maximal eventually different families.
- (joint with Philipp Schlicht, Thilo Weinert and Sandra Uhlenbrock) Variations of the Lebesgue density theorem.
- Infinite combinatorics, definability and forcing.

- January 2017:
*Arctic Set Theory 3*, Kilpisjärvi, Finland. - November 2016: RIMS Workshop on Infinite Combinatorics and Forcing, Kyoto, Japan.
- August 2016: Invited talk at Logic Colloquium 2016 (special session: set theory), Leeds, UK.
- June 2016: SETTOP, Novi Sad, Serbia.

This year, the famous Young Set Theory Workshop put up its tent in
Copenhagen, organized by Karen Bakke Haga, Vibeke Quorning, Asger
Törnquist, and me. We acknowledge generous support from the *DNRF Niels Bohr Professorship* of Lars Hesselholt and from the University of Copenhagen.

- If you are not a set theorist, maybe you will enjoy these slides; I made them with a general mathematical audience in mind, for a talk in the descriptive set theory seminar in Copenhagen on January 9th 2014.
- Here are some slides for my talk at the 4th European Set Theory Conference in Barcelona, in July 2013.

email: david.schrittesser "at" univie.ac.at

Office phone: +45 3533 2013

Address:

Department of Mathematical Sciences

Universitetsparken 5

2100

Copenhagen,
Denmark