Frobenian multiplicative functions and rational points in fibrations
Frobenian multiplicative functions and rational points in fibrations
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DOI:
10.4171/jems/1374
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发表时间:
2019-04
影响因子:
2.6
通讯作者:
D. Loughran;Lilian Matthiesen
中科院分区:
文献类型:
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作者:
D. Loughran;Lilian Matthiesen
We consider the problem of counting the number of varieties in a family over $\mathbb{Q}$ with a rational point. We obtain lower bounds for this counting problem for some families over $\mathbb{P}^1$, even if the Hasse principle fails. We also obtain sharp results for some multinorm equations and for specialisations of certain Brauer group elements on higher dimensional projective spaces, where we answer some cases of a question of Serre. Our techniques come from arithmetic geometry and additive combinatorics.