Computational Mathematics and Applications Seminar

Previous seminars

Internal seminars (Tuesdays) for current term

Upcoming seminars:

25 January 2018
14:00
Bart Vandereycken
Abstract

We present discrete methods for computing low-rank approximations of time-dependent tensors that are the solution of a differential equation. The approximation format can be Tucker, tensor trains, MPS or hierarchical tensors. We will consider two types of discrete integrators: projection methods based on quasi-optimal metric projection, and splitting methods based on inexact solutions of substeps. For both approaches we show numerically and theoretically that their behaviour is superior compared to standard methods applied to the so-called gauged equations. In particular, the error bounds are robust in the presence of small singular values of the tensor’s matricisations. Based on joint work with Emil Kieri, Christian Lubich, and Hanna Walach.

  • Computational Mathematics and Applications Seminar

If no seminars are displayed this means no further seminars will be held during the current term. Please check again for our new seminar programme nearer the start of next term.