Travel and talks
28 June - 3 July 2026 - Topologie, Oberwolfach.
18 - 22 May 2026 - Interactions between higher algebra, manifolds and functor calculus, MPI Bonn.
14 - 16 April 2026 - Manifolds and moduli, Lisbon.
13 January 2026 - Algebraic topology seminar, Warwick.
8 - 12 December 2025 - Copenhagen Centre for Geometry and Topology, Copenhagen.
9-11 September 2025 - 38th British Topology Meeting, Cardiff.
7-11 July 2025 - Workshop on Homotopy Theory, Fields Institute, Toronto. (Lecture 1, Lecture 2, Lecture 3)
8-13 June 2025 - Polylogarithms, homology of linear groups, and Steinberg modules, Les Diablerets. (Lecture 1, Lecture 2, Lecture 3; Notes 1, 2, 3)
31 March-4 April 2025 - LMU Munich.
6-7 March 2025 - IMU-INI Mathematical Colloquia and Panels, Cambridge. (Video)
20 February 2025 - Dublin Mathematics Colloquium, Dublin.
28 November 2024 - Seminar, Sheffield.
19-24 August 2024 - Topology of moduli spaces, Copenhagen.
21-26 July 2024 - Topologie, Oberwolfach.
15-19 April 2024 - Columbia University, New York.
8-12 April 2024 - Namboodiri Lectures in Geometry and Topology, Chicago. (Lecture 1, Lecture 2, Lecture 3)
25-28 March 2024 - Conference, Muenster. (Video)
4-8 December 2023 - Pontificia Universidad Católica de Chile, Santiago.
26 November-1 December 2023 - Spaces of manifolds: algebraic and geometric approaches, Banff. (Video)
17 November 2023 - LMS Annual General Meeting and Presidential Address, London. (Video)
30 October-2 November 2023 - Copenhagen.
24 October 2023 - KCL Geometry Seminar, London.
13 October 2023 - Scottish topology seminar, Glasgow.
4-6 October 2023 - Panorama of Mathematics II, Bonn. (Video, Slides)
20-22 September 2023 - Centenaire de René Thom, IHÉS, Paris. (Video)
6-12 August 2023 - Homotopy Theory, Oberwolfach.
15-17 May 2023 - Homology of Configuration Spaces and related topics, Paris.
22 March 2023 - UCL geometry seminar, London.
15 March 2023 - Seminario de topología algebraica y geométrica, Mexico/online.
25 November 2022 - YMSC Colloquium, Beijing/online. (Slides)
3-4 October 2022 - Ib Fest, Copenhagen.
26-30 September 2022 - Clay research conference, Oxford.
12-16 September 2022 - DMV-Jahrestagung, Berlin. (Slides)
24-30 July 2022 - Topologie, Oberwolfach. (Abstract)
6-14 July 2022 - ICM, at satellite event in Copenhagen. (Video, Slides)
27-30 June 2022 - Homotopy Theory with Applications to Arithmetic and Geometry, Bonn. (Video)
27 May 2022 - Colloquium, Southampton.
16 May 2022 - COGENT Seminar, online.
2 May 2022 - Topology seminar, Melbourne/online.
13 April 2022 - Colloquium, Princeton/online. (Slides)
7 February 2022 - Johnson homomorphisms and related topics, online.
10 January-12 February 2022 - Higher algebraic structures in algebra, topology and geometry, Stockholm. (Video)
4-18 December 2021 - Copenhagen.
30 November 2021 - Seminar, Delhi/online. (Slides)
24 November 2021 - Colloquium, Sheffield/online. (Slides)
23 November 2021 - Johnson homomorphisms and related topics, online.
9 November 2021 - Algebraic Topology seminar, Warwick.
10-15 October 2021 - Cohomology of Arithmetic Groups, Banff/online. (Slides)
21-23 September 2021 - The unity of mathematics: A conference in honour of Sir Michael Atiyah, Cambridge. (Video)
5-7 July 2021 - Operads, Calculus, and Homotopy theory methods in Topology, Lille/online. (Video)
21-25 June 2021 - Manifolds and K-Theory: the legacy of Andrew Ranicki, online.
23-29 May 2021 - Cellular Ek-algebras, Oberwolfach/online. (Notes)
14 April 2021 - Building Bridges Seminar, online.
13 April 2021 - Regensburg SFB-Lecture, online. (Slides)
18 January 2021 - Oxford topology seminar, online. (Slides)
9 November 2020 - Muenster topology seminar, online. (Slides)
5 November 2020 - Princeton algebraic topology seminar, online. (Slides)
14 September 2020 - MIT topology seminar, online. (Slides)
27 August 2020 - Copenhagen Centre for Geometry and Topology, online. (Slides)
26July-1 August 2020 - Topologie, online.
28 April 2020 - Bonn topology seminar, online. (Slides)
9-15 February 2020 - Manifolds and groups, Oberwolfach.
16 January 2020 - electronic Computational Homotopy Theory Seminar, online. (Video, Slides)
11 October 2019 - Colloquium, Warwick.
7 October 2019 - Colloquium, Durham.
30 September-4 October 2019 - Clay research conference and workshops, Oxford. (Video, Slides)
2-6 September 2019 - Automorphisms of Manifolds, Bonn. (Video 1, Video 2)
8-12 July 2019 - Four Manifolds: Confluence of High and Low Dimensions, Toronto.
24-28 June 2019 - SYM 10 Years Old, Copenhagen.
15 June 2019 - Séminaire Bourbaki, Paris. (Video, notes)
13-17 May 2019 - Johnson homomorphisms and related topics, Tokyo.
8-12 April 2019 - Talbot, McCullough County, TX.
1-5 April 2019 - Geometry at infinity, Muenster.
5 March 2019 - INteresantísimo SEminario de Geometría y TOpología, Málaga.
13-20 January 2019 - Harvard.
12 October 2018 - Geometry and Topology seminar, Imperial College, London.
2-6 July 2018 - Topologie, Oberwolfach. (Abstract)
18-23 June 2018 - Manifolds, Groups, and Homotopy, Skye. (Slides)
15-16 February 2018 - K-theory, A1-homotopy and quadratic forms, Warwick.
14-15 December 2017 - Bavarian Geometry and Topology Meeting II, Augsburg.
11-15 September 2017 - Algebraic Topology of Manifolds, Oxford.
26-30 June 2017 - Analysis and Topology in Interaction, Cortona.
5-9 June 2017 - Groups, Manifolds, and K-theory, Muenster.
22-26 May 2017 - Johnson-Morita theory and related topics, Tokyo.
20-21 April 2017 - Moduli and Traces: A celebration of the mathematical life of Ib Madsen, Copenhagen.
3-6 April 2017 - British Mathematical Colloquium, Durham.
16 March 2017 - Topology seminar, Queen Mary, London.
13 March 2017 - OAC-manifolds, Oxford.
5-12 January 2017 - University of Copenhagen.
19-23 September 2016 - European Autumn School in Topology, the woods close to Utrecht.
9 September 2016 - OAC-manifolds, Cambridge.
6-7 September 2016 - TTT, Manchester.
18 July-23 July 2016 - Topologie, Oberwolfach. (Abstract)
4 July-8 July 2016 - Young Topologists Meeting, Copenhagen.
27 June-1 July 2016 - Topology of manifolds: a conference in honour of Michael Weiss' 60th birthday, Lisbon.
9 May 2016 - OAC-manifolds, Aberdeen.
11 March 2016 - Scottish Topology Seminar, Edinburgh.
22-23 February 2016 - OAC-manifolds, Oxford.
18 February 2016 - Warwick University.
14-17 December 2015 - Aspects of Homotopy Theory, Southampton.
14 October 2015 - Columbia University.
6 October 2015 - Topology seminar, Stanford University.
4 October-5 December 2015 - Stanford University.
28 September-2 October 2015 - Manifolds Unlocking Higher Structures, Clay Mathematical Institute Workshop, Oxford.
21 September 2015 - Moduli spaces and their applications, Liverpool.
27 July-21 August 2015 - Hausdorff Centre for Mathematics, Bonn.
29 June-10 July 2015 - PIMS Symposium on the Geometry and Topology of Manifolds, Vancouver.
4-8 May 2015 - Introductory school: Homotopy theory, manifolds, and field theories, HIM, Bonn. (Lecture 1, Lecture 2, Lecture 3)
13-15 April 2015 - Stockholm.
20-28 March 2015 - Teichmüller Modular Groups: A Celebration of Nikolai Ivanov's 60th Birthday, Chicago.
23 February 2015 - Southampton.
19 January 2015 - Oxford.
14-16 December 2014 - Aberdeen.
15-20 September 2014 - Topologie, Oberwolfach. (Abstract)
9-12 August 2014 - ICM Satellite Conference on Algebraic Topology, Dalian, China.
23-27 June 2014 - Manifolds, K-theory, and related topics, Dubrovnik.
16-20 June 2014 - Analysis and Topology in Interaction, Cortona.
9-13 June 2014 - Summer school, Münster. (Lecture 1, Lecture 2, Lecture 3, Lecture 4)
7-10 April 2014 - BMC, Queen Mary, London.
27 February 2014, MSRI Research Seminar.
17 February 2014, Rice University.
11 February 2014, Stanford University.
27 January-28 February 2014 - Algebraic Topology programme, MSRI, Berkeley. (Video)
2 December 2013 - University of Glasgow.
18 November 2013 - University of Manchester.
10-13 October 2013 - Cohomology of the moduli space of curves, Zürich.
9-11 September 2013 - 28th British Topology Meeting, Aberdeen. (Slides)
26-30 August 2013 - Homological stability workshop, Copenhagen.
15-16 May 2013 - Institut de Mathématiques de Jussieu.
2 May 2013 - University of Sheffield.
8-19 April 2013 - Stanford University.
25-28 March 2013 - BMC 2013, Sheffield.
17-19 December 2012 - Aspects of Topology, Oxford.
7 December 2012 - Topology seminar, Nottingham.
4-5 December 2012 - SFB seminar and Algebraic Geometry seminar, Humboldt University, Berlin.
16 November 2012 - Quarterly seminar on Geometry and Topology, Amsterdam.
29 October 2012 - Oxford.
19-21 October 2012 - XIX Encuentro de Topología, La Coruña. (Slides, Slides in English)
17-22 September 2012 - Topologie, Oberwolfach. (Abstract).
6-8 September 2012 - 27th British Topology Meeting, Cambridge.
20-26 August 2012 - Arolla. (Slides)
23-27 July 2012 - Algebraic Topology:Applications and New Directions, Stanford.
25-29 June 2012 - Homotopical Algebra and Its Applications, Luminy.
3-6 May 2012 - 17th NRW meeting, Westfälischen Wilhelms-Universität Münster.
6-10 February 2012 - Universitat de Barcelona.
23-26 January 2012 - Max Planck Institute for Mathematics.
26-27 October 2011 - Edinburgh. (Video)
24-25 October 2011 - Glasgow.
5-7 October 2011 - ETH.
26-30 September 2011 - MIT.
3-23 July 2011 - Moduli Spaces of Riemann Surfaces, Park City Math Institute, Utah.
2-13 May 2011 - Stanford University.
25-29 April 2011 - The Kervaire invariant and stable homotopy theory, ICMS, Edinburgh.
27-29 October 2010 - NTNU.
19-25 September 2010 - Topologie, Oberwolfach. (Abstract).
6-8 September 2010 - 25th British Topology Meeting, Oxford.
9-14 August 2010 - West coast algebraic topology summer school, Eugene, Oregon.
1-8 August 2010 - Stanford University.
11-24 April 2010 - Stanford University.
23 March 2010 - Warwick University.
1-5 February 2010 - University of Copenhagen.
14-15 September 2009 - 24th British Topology Meeting, Leicester.
8-11 June 2009 - 25th Nordic and 1st British-Nordic Congress of Mathematicians, Oslo.
24-30 May 2009 - Manifold Perspectives, Oberwolfach. (Abstract).
11-15 May 2009 - University of Bonn.
6-20 January 2009 - Stanford University.
8-9 December 2008 - University of Sheffield.
18-24 August 2008 - Third Arolla Conference on Algebraic Topology in Arolla, Switzerland.
23-27 June 2008 - Homotopical Group Theory and Topological Algebraic Geometry Conference, Max Planck Institute for Mathematics.
16-20 June 2008 - Homotopical Group Theory and Topological Algebraic Geometry Workshop, University of Copenhagen.
26-31 May 2008 - Topology in the Swiss Alps Young Topologists' Meeting, Le Châtelard, Switzerland.
21-25 April 2008 - Westfälischen Wilhelms-Universität Münster.
7-11 January 2008 - Moduli spaces, Bonn.
15 October 2007 - Topology seminar, Copenhagen.
10 September 2007 - 22nd British Topology Meeting, Sheffield.
8-14 July 2007 - Workshop on Homological Algebra, Southampton.
18-24 June 2007 - Postnikov Memorial Conference, Bedlewo.
7-11 May 2007 - Workshop on Stable Homotopy Theory, Strasbourg.