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Guest Speaker Martin Mathieu-SJ

Author: myUNB News

Posted on Jun 29, 2018

Category: News and Notices

The Department of Mathematics and Statistics would like to invite you to a guest talk by a visitor to the Saint John campus on Tuesday, July 10 at 1 p.m. in K.C. Irving Hall, 107.

Martin Mathieu, from the Queen's University of Belfast in Northern Ireland, will present 'Elementary operators---still not elementary?'

Abstract: Many properties of elementary operators on Banach algebras have been studied extensively by a large number of authors over several decades; but still they defy a full structural understanding maybe the reason being that they appear naturally in many guises in numerous situations. I shall report on recent work with Nadia Boudi (2015) and my latest PhD student Matthew Young (2017) in which we try to understand when elementary operators are spectrally bounded or spectrally isometric. As so often, definitive results are only achieved for elementary operators of small length.

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