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  • M. RAM MURTY (a1) and NEHA PRABHU (a2)

We establish an error term in the Sato–Tate theorem of Birch. That is, for $p$ prime, $q=p^{r}$ and an elliptic curve $E:y^{2}=x^{3}+ax+b$ , we show that

$$\begin{eqnarray}\#\{(a,b)\in \mathbb{F}_{q}^{2}:\unicode[STIX]{x1D703}_{a,b}\in I\}=\unicode[STIX]{x1D707}_{ST}(I)q^{2}+O_{r}(q^{7/4})\end{eqnarray}$$
for any interval $I\subseteq [0,\unicode[STIX]{x1D70B}]$ , where the quantity $\unicode[STIX]{x1D703}_{a,b}$ is defined by $2\sqrt{q}\cos \unicode[STIX]{x1D703}_{a,b}=q+1-E(\mathbb{F}_{q})$ and $\unicode[STIX]{x1D707}_{ST}(I)$ denotes the Sato–Tate measure of the interval $I$ .

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Bulletin of the Australian Mathematical Society
  • ISSN: 0004-9727
  • EISSN: 1755-1633
  • URL: /core/journals/bulletin-of-the-australian-mathematical-society
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