Prof. Shigeru Mukai：Geometric realization of T-shaped root systems and the Jacobians of del Pezzo su

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Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:	Prof. Shigeru Mukai，MCM
Inviter:
Title:	Geometric realization of T-shaped root systems and the Jacobians of del Pezzo surfaces
Time & Venue:	2019.10.10 10:30-11:30 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.