Dear colleague,

I am writing to you to tell you about this year’s installment of our series “GAP: Geometry and Physics", entitled “Advances in Perturbation Theory and Feynman Amplitudes”, and which will take place at the Perimeter Institute (Waterloo, ON, Canada) on May 25—30, 2015.

Compared to previous years, GAP has greatly expanded from a 3-day event to a 6-day one, and will feature the following ten speakers:
	Gökçe Başar (University of Maryland)
	Freddy Cachazo (Perimeter Institute)
	Olivia Dumitrescu (University of California, Davis)
	Alexander Getmanenko (Universidad de los Andes)
	Kohei Iwaki (Kyoto University Research Institute for the Mathematical Sciences)
	Matilde Marcolli (California Institute of Technology)
	Lionel Mason (University of Oxford)
	Pranav Pandit (Universität Wien)
	Marcus Spradlin (Brown University)
	Karen Yeats (Simon Fraser University)
There will be some minicourses to introduce the audience to the major topics (amplitudes, exact WKB analysis, cluster algebras, spectral networks and more), as well as research-focused talks.

Registration will open shortly. For further information, please visit our webpage at
	http://www.math.uwaterloo.ca/~gap/2015/

We would be delighted to have you participate. If you know anybody that might be interested, please let them know too.

Best wishes,

-----
Alberto García-Raboso
Postdoctoral Fellow
Department of Mathematics
University of Toronto
[log in to unmask]
-----

On behalf of co-organizers:
 Freddy Cachazo (Perimeter Institute) 
 Marco Gualtieri (University of Toronto)
 Ruxandra Moraru (University of Waterloo)
 McKenzie Wang (McMaster University)

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