BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Structure-Preserving FEEC Methods for Spectral and Pseudospectral 
 Analysis of Dynamo Operators - Umberto Zerbinati (University of Oxford)
DTSTART:20260205T150000Z
DTEND:20260205T160000Z
UID:TALK242575@talks.cam.ac.uk
CONTACT:Georg Maierhofer
DESCRIPTION:Numerical dynamo problems involve advection–diffusion operat
 ors whose spectral and pseudospectral properties play a central role in de
 termining growth rates\, stability\, and transient amplification. Their re
 liable numerical approximation remains challenging\, particularly in advec
 tion-dominated and strongly non-normal regimes.\nIn this talk\, I present 
 a structure-preserving finite element exterior calculus (FEEC) framework f
 or dynamo-type advection–diffusion operators acting on differential form
 s. The discretization is based on finite element de Rham complexes and pre
 serves the geometric and topological structure of the continuous problem. 
 Within this setting\, we investigate the approximation of spectra and pseu
 dospectra and derive a priori error estimates for pseudospectral convergen
 ce. We also discuss the role of exponential transformations for advection
 –diffusion operators and their consequences for the asymptotic behavior 
 of solutions.\n
LOCATION:Centre for Mathematical Sciences\, MR14
END:VEVENT
END:VCALENDAR