Title: Geometric realization of T-shaped root systems and the Jacobians of del Pezzo surfaces
Speaker: Prof. Shigeru Mukai (MCM)
Time: 2019-10-10, 10:30—11:30
Place: MCM110
Abstract: It is well known that the blow-up of the projective plane has a Cremona symmetry of the Weyl group of the root system of type E. This was generalized to a T-shaped Cremona symmetry of higher dimensional multi-projective spaces by Coble and Mukai. Using this framework I will describe the “Jacobians” of del Pezzo surfaces dP_d, and construct several extremal elliptic fibrations over the d-dimensional projective space.
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