Guest lectures and seminars - Page 2
Geir Storvik is a Professor at the section of Statistics and Data Science, Department of Mathematics, UiO. His main interests are within Bayesian modelling and computational statistics.
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Kamélia Daudel is an Assistant Professor in the Department Information Systems, Data Analytics and Operations at ESSEC Business School in France. Her current research is within the field of approximate inference. She is, in particular, interested in variational inference methods which go beyond the commonly used parametric variational distribution framework and which involve flexible families of divergence measures.
We prove that a very general quartic sixfold admits no decomposition of the diagonal, and in particular is not stably rational. The proof uses specialization to an explicit quartic sixfold birational to a quadric bundle of the type considered by Colliot-Thélène and Ojanguren. We also prove stable irrationality for very general six-dimensional intersections of four quadrics.