Algebra & Geometry Conferences

2026

• Conference: Arithmetic Geometry and Higher Algebra, 9-13 November 2026

2025

• Masterclass: Cobordism categories - Building bridges between algebra and geometry, 17-21 February 2025
• Seminar: The Øresund Seminar on Analysis, PDE & Related Topic,  15 April, 2025
• Masterclass: Geometry of Phase Transitions, 28 April to 2 May, 2025
• Masterclass: Arithmetic and Homotopy Theory,  9-13 June, 2025
• Masterclass: Mathematical Relativity, 16-20 June, 2025
• Masterclass: Infinity operads and manifolds, 11-15 August, 2025
• Masterclass: Geometric Langlands, 18-22 August 2025

2024

• Workshop: International workshop on AI and topology, April 8-10, 2024.
• Masterclass: Homotopical methods in manifold theory, April 15-19, 2024
• Masterclass: Recent progress on singularity analysis and applications of the mean curvature flow, April 29 - May 3, 2024
• Conference: Copenhagen Geometry Conference, 10-14 June, 2024
• Masterclass: Continuous K-theory, dualizable and rigid categories, 10-14 June, 2024
• Masterclass: Rank Conjectures Across Algebra and Topology, 24-28 June, 2024 
• Masterclass: Exit path and stratified homotopy types, 24-28 June, 2024 
• Conference: Topology of moduli spaces, 19-23 August, 2024
• Retreat: GeoTop's annual retreat 2024, 28-29 August, 2024

2023

• Seminar: GeoTop Geometry Day, 23 November 2023
• Masterclass: Topics in geometric group theory, 13-17 November 2023
• Masterclass: Parametrized homotopy theory, 4-8 September 2023
• Masterclass: Arakelov geometry on Shimura varieties, 28 Aug. - 1 Sept. 2023
• Conference: Special session on geometry and topology at the 29th Nordic Congress of Mathematicians, 3-7 July 2023 in Aalborg, Denmark
• Masterclass: Formalisation of Mathematics, 26 - 30 June 2023
  
• Mini-workshop: Reading group on Bergström--Diaconu--Petersen--Westerland, 31 May 2023
• Workshop: Beyond finite sets - homotopy theory and combinatorics, 15-19 May 2023
• Retreat: GeoTop Spring Retreat 2023, 19 Apr. - 20 Apr. 2023
• Masterclass: Higher representation theory, March 13-17 March 2023
• Masterclass: Topological Hochschild Homology and Zeta Values, 30 Jan. - 3 Feb. 2023
  

2022

• Masterclass: Cluster Algebras and Representation Theory, 14 Nov. - 18 Nov. 2022
• Conference: The occasion of Ib Madsen's 80th birthday, 3 Oct. - 4 Oct. 2022
• Conference: Young Topologists Meeting, 18-22 July 2022
• Conference: Geometry and Topology, ICM sectional workshop, 6-14 July 2022
• Conference: Nest Celebration, 13-16 June 2022
• Masterclass/workshop: GeoTop Masterclass/Workshop: Mean Curvature Flow and Related Topics, 7-11 marts 2022

2021

• Workshop: Homotopy and homology of configuration spaces, 15-19 November 2021
• Conference: Automorphisms and Invariants of Operator Algebras, postponed to 18-21 October 2021.
• Seminar: GeoTop IRL Summer Seminar 2021, 8 October 2021.
• Masterclass: Topological field theories and factorization homology, 23-27 August 2021.
• Masterclass: High dimensional cohomology of moduli spaces, 28 June-2 July 2021. 
• Seminar: GeoTop IRL Summer Seminar 2021, 18 June 2021.
• Workshop: Young Geometer's Meeting, 19-23 April 2021.
• Masterclass: Scissors congruence, then and now, postponed to 2021.

2020

• Masterclass: Condensed Mathematics, 9-13 November 2020.
• Symposium: Opening symposium - Centre for Geometry and Topology, 27 August 2020.
• Workshop: GeoTop Geometry Day - Sommer 2020, 25 August, 2020.
• Workshop: Simplicial complexes, 17-21 August, 2020.
• Masterclass: Non-Archimedean Geometry Techniques in Mirror Symmetry, 22-26 June 2020. (Cancelled)

2019:

• Conference: Stability in Group Theory and Operator Algebras. November 25-28, 2019
• Conference: Young Mathematicians in C*-Algebras 19. August 5-10, 2019.
• Workshop: Classifying spaces of finite groups of Lie type. July 8-12, 2019.
• Conference: SYM is 10 years old! June 24-28, 2019.
• Masterclass: Subfactors and Quantum Groups: a combinatorial approach to some problems in Operator Algebras. April 29 - May 3, 2019.

2018:

• Masterclass: Mahler measures and special values of L-functions. August 27-31, 2018.
• Conference: Young Topologists Meeting 18. July 9-13, 2018.
• Workshop: Secondary and delocalized index variants. June 11-15, 2018. 
• Masterclass: Rigidity and algebraic models in stable homotopy theory. April 9-13, 2018.
• Masterclass: Tensor triangular geometry and equivariant stable homotopy theory. March 12-16, 2018.

2017:

• Masterclass: Rigidity of C*-algebras associated to dynamics. October 16-20, 2017.
• Masterclass: Applications of the UCT for C*-algebras. October 2-6, 2017.
• Masterclass: Representation theory, L-functions and number theory. August 21-25, 2017.
• Conference: Young Mathematicians in C*-Algebras 17. August 7-11, 2017.
• Workshop: Young Women in C*-Algebras. August 5-6, 2017.
• Masterclass: Stable homotopy theory and p-adic Hodge theory. June 26-30, 2017.
• Conference: N-cube days VI. June 2-3, 2017.
• Masterclass: Cohomology of arithmetic groups. May 8-11, 2017.
• Conference: Moduli and Traces: A celebration of the mathematical life of Ib Madsen. April 20-21, 2017.
• Masterclass: Stratifications and duality in modular representation theory. March 27-31, 2017.

2016:

• Masterclass: Sums of self-adjoint operators: Kasparov products and applications. August 22-26, 2016.
• Conference: Young Topologists Meeting 16. July 4-8, 2016.
• Symposium: The mathematical legacy of Uffe Haagerup. June 24-26, 2016.
• Masterclass: Expanders and rigidity of group actions. May 2-6, 2016.

2015:

• Lecture Series: Quasidiagonality of nuclear C*-algebras. November 10-12, 2015.
• Workshop: Automorphisms of free groups. November 9-13, 2015.
• Masterclass: Algebraic structures of Hochschild complexes. October 12-16, 2015.
• Conference: Young Mathematicians in C*-Algebras 15. August 17-21, 2015.
• Masterclass: Representation theory of groups, quantum groups and operator algebras. June 1-5, 2015.
• Masterclass: Homological mirror symmetry, deformation quantization and noncommutative geometry. May 18-23, 2015.
• Conference: on operator algebras and applications in celebration of Erik Christensen and his work. May 4-8, 2015.
• Masterclass: Groups, boundary actions and group C*-algebras. April 13-17, 2015.
• Mini Course: Infinite loop spaces and positive scalar curvature. February 16-20, 2015.

2014:

• Workshop: Discrete, computational and algebraic topology. November 10-14, 2014.
• Masterclass: Deformation quantization and algebraic index theorems.  October 27-31, 2014.
• Masterclass: Topological quantum field theories, quantum groups and 3-manifold invariants. October 6-10, 2014.
  
• Conference: Cube complexes and groups. July 7-11, 2014.
• Conference: Young Topologists Meeting 14. June 30-July 4 2014.

2013:

• Workshop: Danish-Norwegian operator algebra workshop. December 12-14, 2013.
• Workshop: Flow equivalence of graphs, shifts, and C*-algebras. November 18-22, 2013.
• Mini Course: Infinity categories. November 12-15.
• Masterclass: Ergodic theory and von Neumann algebras. Oct 14-18, 2013.
• Workshop: Classifying spaces, loop spaces and finiteness.  Oct 14-18, 2013.
• Masterclass: The theory of p-local compact groups.  Oct 7-11, 2013.
  
• Masterclass: Kazdan-Lusztig theory Sept 4,11,13, 2013
• Masterclass/Workshop: Homological stability. Aug 26-30, 2013.
• Masterclass: Geometric structure in the representation theory of p-adic groups. Aug 19-23, 2013.
• Workshop: Group actions and homotopy theory. Aug 19-23, 2013.
• Masterclass: Equivariant stable homotopy theory. Aug 12-16, 2013.
• Masterclass: Classification of non-simple purely infinite C*-algebras. July 22-26, 2013.
• Masterclass/Workshop: Classification problems in groups and fusion systems. Jun 10-14, 2013.
• Masterclass: Kac-Moody groups: structure, geometry and homotopy. Jun 3-7, 2013.
• Masterclass: Quantum theory's influences on topology, analysis and geometry. May 20-June 1, 2013.
• Workshop: String topology and related topics. April 15-19, 2013.

2012:

• Workshop: on Sofic groups and applications to operator algebras. Nov 5-9, 2012.
• Workshop: Non standard hierarchical tilings.  Sep 20-22, 2012.
• Workshop: Semiprojective C*-algebras. Sep 2-6, 2012.
• Masterclass: Semiprojectivity. Aug 27-31, 2012.
  
• Conference: Young Topologists Meeting 2012. Jul 2-6, 2012.
• Workshop: Geometry workshop. Jun 11-15, 2012.
• Masterclass: Koszul duality for operads. Apr 16-27, 2012.
• Masterclass: Quantum groups. Mar 5-9, 2012.

2011:

• Masterclass: The tautological ring. Dec 12-16, 2011.
• Masterclass: The nuclear dimension of C*-algebras. Nov 14-18, 2011.
• Workshop: Workshop in honor of Kirchberg's 65th birthday. Nov 10-13, 2011.
• NordForsk Network Junior Workshop: Operator algebras and dynamical systems. Sep 14-17, 2011.
• Workshop: Homotopical approaches to group actions. Aug 22-26, 2011.
• Masterclass: Homotopical approaches to group actions. Aug 15-19, 2011.
• Masterclass/Workshop: Fusion systems and p-local group theory. Jul 18-22, 2011.
• Masterclass: The structure of p-adic groups. Feb 14-25, 2011.

2010:

• Masterclass: Stable homology by the scanning method. Nov 8-10, 2010.
• Conference: NestFest.Sep 2-5, 2010.
• Workshop: Deligne cohomology workshop. Aug 2-6, 2010.
• Masterclass: Cuntz-Pimsner algebras: Applications and generalizations. Jul 5-9, 2010
• Conference: Young Topologists Meeting 2010. Jun 16-20, 2010.
• Workshop: Semiprojectivity and asymptotic morphisms. May 17-21, 2010.
• Conference: Operator algebras--celebrating Uffe Haagerup's 60th birthday. Apr 9-11, 2010.
• Workshop: Mapping surgery to analysis. Feb 22-27, 2010.
• Workshop: Strings in Copenhagen. Feb 15-19, 2010.
• Workshop and masterclass: von Neumann algebras and group actions. Jan 25-Feb 5, 2010.
• Conference: Copenhagen Topology Conference 2010. Jan 8-10, 2010.       
• Inauguration: Centre for Symmetry and Deformation. Jan 8, 2010.         

2008:

• Workshop: Local methods in fusion systems, Dec 15-19, 2008
• Workshop: E_n-operads in differential graded algebra, Nov 17-21, 2008.
• Conference: Homotopical Group Theory and Topological Algebraic Topology June 16-20, 2008.
• Conference: EMS joint mathematical weekend Feb 29-Mar 2, 2008.
• Workshop: Beyond p-compact groups Jan 28-Feb 3, 2008.

2007:

• Workshop: Mapping class groups and operads Sept 3-7, 2007.
• Workshop: Homotopy theory and group actions Aug 13-24, 2007.
• Workshop: Finite groups and p-local finite groups July 16-27, 2007.

2006:

• Conference: Georgian Topology Week. Sept 25-Oct 1, 2006.
• Masterclass: "Lie algebroids and Characteristic Classes" by Paul Bressler (Arizona), Sept 2006. 
• Masterclass: Interaction between complex dynamics and potential theory. Sept 9-16, 2006.
• Masterclass: Vanishing theorems in algebraic geometry. Sept 9-16, 2006.
• Workshop and Master Class: "Morse Theory and String Topology". September 4-8, 2006
• Conference: First Copenhagen Topology Conference Sept 1-3, 2006.
• Masterclass: "Manifolds". July 24-28, 2006.