University of Birmingham > Talks@bham > Algebra Seminar > The geometries of the Freudenthal-Tits magic square

## The geometries of the Freudenthal-Tits magic squareAdd to your list(s) Download to your calendar using vCal - Jeroen Schillewaert, Imperial College, London
- Thursday 07 November 2013, 16:00-17:00
- Watson Building, Lecture Room A.
If you have a question about this talk, please contact David Craven. I will discuss an ongoing project (joint with H. Van Maldeghem) to give a uniform axiomatic description of the embeddings in projective space of the varieties corresponding with the geometries of exceptional Lie type over arbitrary fields. In particular, I will focus on the second row of the Freudenthal-Tits Magic Square. I will mainly focus on the split case, and provide a uniform (incidence) geometric characterization of the Severi varieties over arbitrary fields. This can be regarded as a counterpart over arbitrary fields of the classification of smooth complex algebraic Severi varieties. The proofs just use projective geometry. In the remaining time, I will discuss a geometric characterization of projective planes over quadratic alternative division algebras. This talk is part of the Algebra Seminar series. ## This talk is included in these lists:Note that ex-directory lists are not shown. |
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