WEIERSTRASS POINTS WITH FIRST TWO NON-GAPS EQUAL TO n AND n + 2
WEIERSTRASS POINTS WITH FIRST TWO NON-GAPS EQUAL TO n AND n + 2
复制标题
前两个非间隙等于 n 和 n 2 的 Weierstrass 点
DOI:
10.2206/kyushujm.68.139
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发表时间:
2014
影响因子:
0.4
通讯作者:
Takaomi Kato
中科院分区:
文献类型:
--
作者:
M. Coppens;Takaomi Kato
We study Weierstrass points on a smooth curve C whose first two non-gaps equal n and n + 2. If the genus g of C satisfies g > [(n2 − 1)/2], then it is known that C is a two-sheeted covering of a curve. In this paper, we mainly concentrate on a point P ∈ C such that |nP | is a base point free pencil and |(n + 2)P | is a base point free simple net, whence necessarily g ≤ [(n2 − 1)/2], and study bounds for numbers of such Weierstrass points on C.