Rank of divisors on hyperelliptic curves and graphs under specialization
Rank of divisors on hyperelliptic curves and graphs under specialization
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特化下超椭圆曲线和图的除数等级
DOI:
10.1093/imrn/rnu059
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Shu Kawaguchi and Kazuhiko Yamaki
中科院分区:
文献类型:
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作者:
元結 啓仁;李 智蓮;谷内 敏之;高橋 竜太;リップマー ミック;辛 埴;大日方絢,早川大智,日比野有岐,小山知弘,三輪一元,小野新平,千葉大地;Shu Kawaguchi and Kazuhiko Yamaki
Let (G,ω) be a hyperelliptic vertex-weighted graph of genusg≥2. We give a characterization of (G,ω) for which there exists a smooth projective curveXof genusgover a complete discrete valuation field with reduction graph (G,ω) such that the ranks of any divisors are preserved under specialization. We explain, for a given vertex-weighted graph (G,ω) in general, how the existence of suchXrelates the Riemann–Roch formulae forXand (G,ω), and also how the existence of suchXis related to a problem by Caporaso.