David Schrittesser is postdoc at the Kurt Gödel Research Center, University of Vienna.

He works in set theory, focusing on descriptive set theory and independence results.

David Schrittesser received his doctorate at the Kurt Gödel Research Center in 2010 under Sy David Friedman. He has previously worked at the University of Bonn (where he was Hausdorff postdoc), and at the University of Copenhagen.

Personal webpage

# Recent and upcoming talks by David Schrittesser

## Generalised Baire Spaces, Amsterdam, August 22-24, 2018

KNAW Academy Colloquium Generalised Baire Spaces Amsterdam, The Netherlands Master Class: 22 August 2018 / Colloquium: 23–24 August 2018 Organisers. Lorenzo Galeotti, Benedikt Löwe, Philipp Lücke. Descriptive set theory and set theory of the reals traditional deal with well-known and well-studied topological spaces such as the real numbers, Cantor space, and Baire space. continue reading…

## David Schrittesser – On the Complexity of Maximal Cofinitary Groups

Talk held by David Schrittesser (KGRC) at the KGRC seminar on 2018-01-11. Abstract: A maximal cofinitary group is a subgroup of the group of permutations of the set of natural numbers $\mathbb N$ such that any group element has only finitely many fixed points, and no strictly larger group of permutations of $\mathbb N$ has this property. continue reading…

## David Schrittesser: News on mad families

KGRC Research Seminar  – 2017-06-22 at 4pm. Speaker: David Schrittesser (University of Copenhagen, Denmark) Abstract: This talk is about two results on mad families (dating from this year): Firstly, in joint work with Karen Bakke Haga and Asger Törnquist and, we link madness of certain definable sets to forcing and use this to show that under the Axiom of Projective Determinacy there are no projective mad families. continue reading…

## Infinite Combinatorics and Forcing Theory, Kyoto, November 28 – December 1, 2016

RIMS Workshop on Infinite Combinatorics and Forcing Theory November 28 – December 1, 2016 at the Research Institute for Mathematical Sciences (RIMS), Kyoto University The workshop website: http://www.ipc.shizuoka.ac.jp/~styorio/rims16/index.html Tutorial speakers: Natasha Dobrinen (University of Denver), Ramsey theory in forcing Yinhe Peng (University of Toronto), Negative partition relations on $\omega_1$ Speakers: Jörg Brendle (Kobe University), Maximal trees Fabiana Castiblanco (Universität Münster), Preserving sharps by tree forcings David Chodounsky (Institute of Mathematics of the Czech Academy of Science), Mathias-Prikry forcing and generic ultrafilters Sakaé Fuchino (Kobe University), Reflection theorems on non-existence of orthonormal bases of pre-Hilbert spaces Daisuke Ikegami (Tokyo Denki University), Boolean valued second order logic Diego A. continue reading…

## David Schrittesser: Maximal discrete sets with large continuum

25.01.2016 Seminar room 0.011, Mathematical Institute, University of Bonn Speaker: David Schrittesser (University of Copenhagen) Title: Maximal discrete sets with large continuum Abstract. In recent joint work with Asger Törnquist, we showed how to construct definable maximal discrete sets in forcing extensions of L, in particular in the Sacks and Miller extension. continue reading…

## Logic Colloquium 2016, July 31- August 6, 2016

The Logic Colloquium 2016, organized under the auspices of the Association for Symbolic Logic, will be held at the University of Leeds (UK) from July 31 to August 6. Plenary Speakers Gödel lecture: Stevo Todorcevic Other plenary speakers: Benno van den Berg Laurent Bienvenu Richard Garner Rob Goldblatt Itay Kaplan Toniann Pitassi Farmer Schlutzenberg Dima Sinapova Henry Towsner Timothy Williamson Boris Zilber Tutorials  Topic: Univalent Foundations Speaker: Thierry Coquand Topic: Computable model theory Speaker: Uri Andrews Special Sessions Set theory Organizers: Boban Velickovic, Itay Neeman Andrew Marks – UCLA David Schrittesser – University of Copenhagen Anush Tserunyan – UI Urbana Champaign Nam Trang – UC Irvine Topic: Computability theory Organizers: Iskander Kalimullin, Sebastiaan Terwijn. continue reading…

## 4th European Set Theory Conference, July 15 – 18, 2013

The 4th European Set Theory Conference will be held in Mon St Benet, near Barcelona, on 15-18 July 2013. Mostowski lecture: Adam Krawczyk (Warsaw): Andrzej Mostowski Centenary. Hausdorff Medal lecture: Hugh Woodin Tutorials: Moti Gitik (Tel Aviv): Forcing and cardinal arithmetic Plenary lectures: Laura Fontanella Menachem Magidor Michael Rathjen John Steel Philip Welch Invited lectures: Alessandro Andretta: The density point property. continue reading…

## David Schrittesser: Separating ideals and Jensen coding with Easton support

Monday, November 5, 2012, 16.30 Seminar room 1.007, Mathematical Institute, University of Bonn Speaker: David Schrittesser (Vienna) Title: Separating ideals and Jensen coding with Easton support continue reading…