BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Umberto Zerbinati DTSTART:20260211T080000Z DTEND:20260211T090000Z DTSTAMP:20260422T122532Z UID:MathMAC/50 DESCRIPTION:Title: Structure-Preserving FEEC Methods for Spectral and Pseudospectral Analysi s of Dynamo Operators\nby Umberto Zerbinati as part of Modelling of ma terials - theory\, model reduction and efficient numerical methods (UNCE M athMAC)\n\n\nAbstract\nNumerical dynamo problems involve advection–diffu sion operators whose spectral and pseudospectral properties play a central role in determining growth rates\, stability\, and transient amplificatio n. Their reliable numerical approximation remains challenging\, particular ly in advection-dominated and strongly non-normal regimes. In this talk\, I present a structure-preserving finite element exterior calculus (FEEC) f ramework for dynamo-type advection–diffusion operators acting on differe ntial forms. The discretization is based on finite element de Rham complex es and preserves the geometric and topological structure of the continuous problem. Within this setting\, we investigate the approximation of spectr a and pseudospectra and derive a priori error estimates for pseudospectral convergence. We also discuss the role of exponential transformations for advection–diffusion operators and their consequences for the asymptotic behavior of solutions.\n LOCATION:https://researchseminars.org/talk/MathMAC/50/ END:VEVENT END:VCALENDAR