Prof. Lyonell Boulton

photo Official departmental front page.
Department of Mathematics page.
Maxwell Institute for Mathematical Sciences page.
Of. CM S20
Tel. 131 4513973
Department of Mathematics
Heriot-Watt University
Edinburgh EH14 4AS
Scotland UK

Research Interest

Spectral analysis of linear operators in general. Non-selfadjoint operators. Pseudospectra of operator and matrix polynomials. Computational spectral theory. Spectral pollution and spectral enclosures. Ordinary differential equations. Mathematical physics. Approximation theory. Revivals and Dispersive Quantisation.

Official research profile.

My most demanding collaborator ever.

My most hard working collaborator ever.

Time in United Kingdom:

Mathematical Aspects of the Physics with Non-self-adjoint Operators (MAPwNSA)

Series portal and open problems

Venezuelan Mathematical Association

Official Website


PhD Students

Domenic Petzinna Current.

Georgios Farmakis Current (co-supervision with Beatrice Pelloni).

Spyridon Dimoudis 2017-2022.

Houry Melkonian 2013-2017.

Kim Smedley-Williams 2010-2022 (co-supervision with Bernd Schroers).

Aatef Hobiny 2010-2014.

Active Lecture Courses

Functional Analysis: F10MF F11FM - First Semester 22-23.

Complex Analysis: F19MC - Second Semester 22-23.


MACS Intranet.

Portal HWU.




For appointments please send me an email - free spots in the calendar do not guarantee full availability.

Personal links

A decade of Sun in an hour

Notas para Eliza, a Raquel Rivas' blog

Cuentos de la Caldera Este, a Raquel Rivas' blog

The Can Collector, The Debt and Inventory for After the War. Short stories by Raquel Rivas

Avalanche Information for Scotland

Mountain Weather Information Service

Metoffice weather forecast

Royal Commonwealth Pool timetable

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