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Algebraic Geometry Seminar
Seminar information archive ～10/17｜Next seminar｜Future seminars 10/18～
| Date, time & place | Friday 13:30 - 15:00 118Room #118 (Graduate School of Math. Sci. Bldg.) |
|---|---|
| Organizer(s) | GONGYO Yoshinori, KAWAKAMI Tatsuro, ENOKIZONO Makoto |
2026/10/23
13:15-14:45 Room #118 (Graduate School of Math. Sci. Bldg.)
Matthias Schütt (Leibniz Univ. Hannover)
Real, Complex and Salem multiplication for K3 surfaces
Matthias Schütt (Leibniz Univ. Hannover)
Real, Complex and Salem multiplication for K3 surfaces
[ Abstract ]
In this talk, I will discuss joint work with Eva Bayer and Bert van Geemen
on Hodge endomorphism algebras of K3 surfaces, both projective and non-projective,
following classical work of Zarhin.
In the projective case, I will focus on real multiplication,
giving abstract lattice theoretic existence results and concrete geometric realizations;
both approaches also apply to complex multiplication.
In the non-projective case, I will highlight the occurrence of Salem multiplication,
a notion informed by dynamics. Time permitting,
I will draw some new conclusion on bimeromorphisms on non-projective hyperkähler manifolds,
based on recent results with Eva Bayer and Stevell Muller.
In this talk, I will discuss joint work with Eva Bayer and Bert van Geemen
on Hodge endomorphism algebras of K3 surfaces, both projective and non-projective,
following classical work of Zarhin.
In the projective case, I will focus on real multiplication,
giving abstract lattice theoretic existence results and concrete geometric realizations;
both approaches also apply to complex multiplication.
In the non-projective case, I will highlight the occurrence of Salem multiplication,
a notion informed by dynamics. Time permitting,
I will draw some new conclusion on bimeromorphisms on non-projective hyperkähler manifolds,
based on recent results with Eva Bayer and Stevell Muller.
