# Oliver Gäfvert

I am a third year PhD student at KTH Royal Institute of Technology in Stockholm, Sweden.

### Papers

Oliver Gäfvert, Computational complexity in algebraic regression, preprint.

Oliver Gäfvert, Wojciech Chachólski, Stable Invariants for Multidimensional Persistence, preprint.

### Talks

4/12/19 - Invariants for multiparameter persistence, Nonlinear algebra seminar, MPI MIS Leipzig, Germany, slides.

13/11/19 - Computational complexity in algebraic regression, Algorithmic algebra seminar, TU Berlin, Berlin, Germany, slides.

22/10/19 - Parametrised metrics on persistence modules and non-linear hierarchical clustering, Topology Seminar, EPFL, Lausanne, Switzerland, slides.

7/10/19 - The Euclidean distance degree of the hypothesis variety, Thematic Einstein Semester on Algebraic Geometry - Varieties, Polyhedra, Computation, FU Berlin, Berlin, Germany, poster.

9/7/19 - The Euclidean distance degree of the hypothesis variety, SIAM Conference on Applied Algebraic Geometry, University of Bern, Bern, Switzerland, poster.

2/7/19 - The Euclidean distance degree of the hypothesis variety, Summer School on Randomness and Learning in Non-Linear Algebra, MPI Leipzig, Germany, poster.

22/5/19 - Topcat: Computing Multiparameter Persistence - Local and Global Methods, Dagstuhl Seminar on Topology, Computation and Data Analysis, Schloss Dagstuhl, Germany, slides.

18/2/19 - Topological Data Analysis, Statistics and Machine Learning, MathDataLab Seminar, KTH, Stockholm, Sweden, slides.

26/10/18 - Multiparameter Persistence and Nonlinear Hierarchical Clustering, Data Science and Applied Topology Seminar, CUNY Graduate Center, New York, USA, slides.

26/6/18 - On the NP-hardness of computing stabilized Betti numbers, ATMCS 8, IST Austria, slides.

19-23/2/18 - Topology-based Metric Learning, TAGS - Linking Topology to Algebraic Geometry and Statistics, Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany, poster.

11/10/17 - Differentiable Neural Computers, Stockholm AI Study Group, Schibsted, Stockholm, Sweden, video.

23-29/9/17 - The Differentiable Neural Computer, The Heidelberg Laureate Forum, Heidelberg, Germany, slides.

20-21/6/17 - Topological Methods in Data Analysis, IESC Symposium, Stockholm, Sweden, slides.

25-29/7/16 - Topcat - A Multidimensional Persistent Homology Library, ATMCS 7, Torino, Italy, slides, code.