Theta Characteristics of Tropical K 4 -Curves
Theta Characteristics of Tropical K 4 -Curves
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热带 K 4 曲线的 Theta 特征
DOI:
10.1007/978-1-4939-7486-3_4
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Pakawut Jiradilok
中科院分区:
文献类型:
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作者:
M. Chan;Pakawut Jiradilok
A K4-curve is a smooth proper curve X of genus 3 over a field with valuation whose Berkovich skeleton Γ is a complete graph on four vertices. The curve X has 28 effective theta characteristics—the 28 bitangents to a canonical embedding—while Γ has exactly seven effective tropical theta characteristics, as shown by Zharkov. We prove that the 28 effective theta characteristics of a K4-curve specialize to the theta characteristics of its minimal skeleton in seven groups of four.