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Mathematics > Algebraic Geometry
Title: K3 surfaces with real or complex multiplication
(Submitted on 8 Jan 2024 (v1), last revised 26 Mar 2024 (this version, v2))
Abstract: Let $E$ be a totally real number field of degree $d$ and let $m \geqslant 3$ be an integer. We show that if $md \leqslant 21$ then there exists an $(m-2)$-dimensional family of complex projective $K3$ surfaces with real multiplication by $E$. Analogous results are proved for CM number fields and also for all known higher-dimensional hyperk\"ahler manifolds.
Submission history
From: Matthias Schütt [view email][v1] Mon, 8 Jan 2024 18:18:33 GMT (13kb)
[v2] Tue, 26 Mar 2024 20:31:18 GMT (29kb)
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