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Double ramification cycles with target varieties
Journal of Topology ( IF 0.8 ) Pub Date : 2020-10-28 , DOI: 10.1112/topo.12174
Felix Janda 1 , Rahul Pandharipande 2 , Aaron Pixton 3 , Dimitri Zvonkine 4
Affiliation  

Let X be a nonsingular projective algebraic variety over C , and let M ¯ g , n , β ( X ) be the moduli space of stable maps
f : ( C , x 1 , , x n ) X
from genus g , n ‐pointed curves C to X of degree β . Let S be a line bundle on X . Let A = ( a 1 , , a n ) be a vector of integers which satisfy
i = 1 n a i = β c 1 ( S ) .
Consider the following condition: the line bundle f S has a meromorphic section with zeros and poles exactly at the marked points x i with orders prescribed by the integers a i . In other words, we require f S ( i = 1 n a i x i ) to be the trivial line bundle on C .


中文翻译:

目标品种的双分枝周期

X 成为非奇异的射影代数变体 C , 然后让 中号 ¯ G ñ β X 是稳定图的模空间
F C X 1个 X ñ X
来自属 G ñ 指向曲线 C X β 。让 小号 成为线束 X 。让 一种 = 一种 1个 一种 ñ 是满足以下条件的整数的向量
一世 = 1个 ñ 一种 一世 = β C 1个 小号
请考虑以下情况:线束 F 小号 亚纯断面的零点和极点恰好位于标记点 X 一世 用整数指定的顺序 一种 一世 。换句话说,我们要求 F 小号 - 一世 = 1个 ñ 一种 一世 X 一世 成为平凡的线束 C
更新日期:2020-10-30
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