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Reading material Lecture 1: Towards hyper-telescopes, a new generation of interferometers Lecture 2: Towards hyper-telescopes, a new generation of interferometers (continued) Lecture 3: Terrestrial versions of hyper-telescopes Lecture 4: Terrestrial …

My lecture this year is based on my collaboration with Dirk Kreimer and concerns renormalization in field theory. We show that renormalization is a special case of a general finite part extraction procedure given by the Riemann-Hilbert problem with values …