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# Luc Hillairet – Analysis & PDE Seminar

## October 31, 2018 @ 4:00 pm - 5:00 pm

**Title: ***The wave trace on a flat surface with conical singularities.*

**Abstract: **We study the contribution to the wave trace of diffractive periodic orbits on Euclidean surfaces with conical singularities. Using a new description of the propagator near the so-called geometrically diffractive rays, we are able to compute the leading term of any kind of diffractive periodic orbit.

Joint work with A. Ford and A. Hassell.