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Texas A&M University
Mathematics

Events for 02/06/2020 from all calendars

Mathematical Physics and Harmonic Analysis Seminar

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Time: 2:00PM - 2:50PM

Location: BLOC 628

Speaker: Darren Ong, XIAMEN UNIVERSITY MALAYSIA

Title: Restrictions on the existence of a canonical system flow hierarchy

Abstract: The KdV hierarchy is a family of evolutions on a Schr\"odinger operator that preserves its spectrum. Canonical systems are a generalization of Schr\"odinger operators, that nevertheless share many features with Schr\"odinger operators. Since this is a very natural generalization, one would expect that it would also be straightforward to build a hierarchy of isospectral evolutions on canonical systems analogous to the KdV hierarchy. Surprisingly, we show that there are many obstructions to constructing a hierarchy of flows on canonical systems that obeys the standard assumptions of the KdV hierarchy. This is joint work with Injo Hur.

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