Homogeneous spaces and degree 4 del Pezzo surfaces
Homogeneous spaces and degree 4 del Pezzo surfaces
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均匀空间和 4 度 del Pezzo 曲面
DOI:
10.1007/s00229-009-0268-1
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发表时间:
2009
影响因子:
0.6
通讯作者:
Flynn E
中科院分区:
文献类型:
--
作者:
Flynn E
It is known that, given a genus 2 curve, wheref(x) is quintic and defined over a fieldK, of characteristic different from 2, and given a homogeneous spacefor complete 2-descent on the Jacobian of, there is aVδ(which we shall describe), which is a degree 4 del Pezzo surface defined overK, such that. We shall prove that every degree 4 del Pezzo surfaceV, defined overK, arises in this way; furthermore, we shall show explicitly how, givenV, to findandδsuch thatV=Vδ, up to a linear change in variable defined overK. We shall also apply this relationship to Hürlimann’s example of a degree 4 del Pezzo surface violating the Hasse principle, and derive an explicit parametrised infinite family of genus 2 curves, defined over, whose Jacobians have nontrivial members of the Shafarevich-Tate group. This example will differ from previous examples in the literature by having only two-rational Weierstrass points.
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DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
M. Stoll
通讯作者:
M. Stoll
影响因子:
0.7
作者:
Nils Bruin;E. V. Flynn
通讯作者:
E. V. Flynn
DOI:
10.1515/crll.1975.274-275.164
发表时间:
1975
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
--
作者:
B. Birch;H. Swinnerton
通讯作者:
H. Swinnerton
DOI:
--
发表时间:
2007
期刊:
LMS J. Comput. Math.
影响因子:
--
作者:
M. Bright;Nils Bruin;E. V. Flynn;A. Logan
通讯作者:
A. Logan
影响因子:
2
作者:
A. Logan;R. Luijk
通讯作者:
R. Luijk