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I am currently a postdoctoral researcher (wissenschaftlicher Mitarbeiter) in mathematics at the Heinrich-Heine Universität of Düsseldorf, in the group of Pr. Dr. Stefan Schröer. I defended my thesis on October 1st 2018, which was prepared at the Institut Fourier (Université Grenoble Alpes) under the supervision of Michel Brion. I work on equivariant algebraic geometry. More specifically, I study almost homogeneous varieties, that is to say varieties equipped with an action of an algebraic group with a dense orbit.