A positive proportion of plane cubics fail the Hasse principle
A positive proportion of plane cubics fail the Hasse principle
复制标题
平面立方体的正比例不符合哈斯原理
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
M. Bhargava
中科院分区:
文献类型:
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作者:
M. Bhargava
When all ternary cubic forms over $\mathbb Z$ are ordered by the heights of their coefficients, we show that a positive proportion of them fail the Hasse principle, i.e., they have a zero over every completion of $\mathbb Q$ but no zero over $\mathbb Q$. We also show that a positive proportion of all ternary cubic forms over $\mathbb Z$ nontrivially satisfy the Hasse principle, i.e., they possess a zero over every completion of $\mathbb Q$ and also possess a zero over $\mathbb Q$. Analogous results are proven for other genus one models, namely, for equations of the form $z^2=f(x,y)$ where $f$ is a binary quartic form over $\mathbb Z$, and for intersections of pairs of quadrics in $\mathbb P^3$.