News & events Event series MSI Colloquium 2021 Past events 26 Aug 2021 | 4 - 5pm Approximable Triangulated Categories Approximable Triangulated Categories. View the event 19 Aug 2021 | 4 - 5pm Scalable Subspace Methods for Derivative-Free Nonlinear Least-Squares Optimization Scalable Subspace Methods for Derivative-Free Nonlinear Least-Squares Optimization. View the event 28 Apr 2021 | 2:45 - 3:45pm Good news and bad news for tree reconstruction When is a graph uniquely determined by its vertex-deleted subgraphs? View the event