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Dr Suresh Eswarathasan

Dr Suresh Eswarathasan


Yr Ysgol Mathemateg

+44 (0)29 2087 0935
029 2087 4199
M/2.53, 2nd Floor, Mathematics Institute, Senghennydd Road, Cardiff, CF24 4AG

Research Group

Research Interests

  • Microlocal analysis
  • spectral theory
  • differential geometry
  • dynamical systems
  • geometric measure theory

Personal Website

Please see my personal webpage for my publication list and detailed CV.









Fall 2015: MA2002 – Matrix Algebra

Question: What is “microlocal analysis”?

Microlocal analysis originated in the study of partial differential equations through the lens of phase space methods, that is, by combining ideas from symplectic geometry and Fourier analysis to investigate qualitative and quantitative properties of PDEs. In particular, the philosophy has lead to major advances in the understanding of linear PDEs in the last 50 years (as can be seen from the now classical four volume treatise The Analysis of Linear Partial Differential Operators I-IV by Lars Hörmander).

`Microlocalisation’ is  a process which combines the standard  techniques of localisation and Fourier transforms: one localises not only in the space variable x, but as well in the  Fourier transform variable p. The resulting space of the variables (x,p) is called the phase space and enjoys the structure of a symplectic manifold. The symplectic geometry of this space and the corresponding Hamiltonian dynamical system are then used to study the original PDE problems. The beauty of the field lies in this  interaction between analysis and geometry, hence why I find the adjacent fields of differential geometry, dynamical systems, and geometric measure theory equally as fascinating!

The subject continues to develop to this day and is constantly finding new applications in diverse areas of mathematics, such as the spectral theory of self and non-self adjoint operators, scattering theory, inverse problems in medical imaging, mixing in dynamical systems, and so forth.

For more information on my travel, research lectures/visits, etc. please see my detailed CV on my personal webpage.

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