1. ON ENDOMORPHISMS OF ARRANGEMENT COMPLEMENTS.
- Author
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KURUL, ŞEVDA and WERNER, ANNETTE
- Subjects
- *
ANALYTIC geometry , *FINITE fields , *PROJECTIVE spaces , *AUTOMORPHISMS , *ENDOMORPHISMS , *MATHEMATICS , *GEOMETRY - Abstract
Let Ω be the complement of a connected, essential hyperplane arrangement. We prove that every dominant endomorphism of Ω extends to an endomorphism of the tropical compactification X of Ω associated to the Bergman fan structure on the tropical variety trop(Ω). This generalizes a result in [Compos. Math. 149 (2013), pp. 1211–1224], which states that every automorphism of Drinfeld’s half-space over a finite field Fq extends to an automorphism of the successive blow-up of projective space at all Fq-rational linear subspaces. This successive blow-up is in fact the minimal wonderful compactification by de Concini and Procesi, which coincides with X by results of Feichtner and Sturmfels. Whereas the proof in [Compos. Math. 149 (2013), pp. 1211–1224] is based on Berkovich analytic geometry over the trivially valued finite ground field, the generalization proved in the present paper relies on matroids and tropical geometry. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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