artin's conjecture
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2022 ◽  
Vol Volume 44 - Special... ◽  
Author(s):  
Sankar Sitaraman

E. Artin conjectured that any integer $a > 1$ which is not a perfect square is a primitive root modulo $p$ for infinitely many primes $ p.$ Let $f_a(p)$ be the multiplicative order of the non-square integer $a$ modulo the prime $p.$ M. R. Murty and S. Srinivasan \cite{Murty-Srinivasan} showed that if $\displaystyle \sum_{p < x} \frac 1 {f_a(p)} = O(x^{1/4})$ then Artin's conjecture is true for $a.$ We relate the Murty-Srinivasan condition to sums involving the cyclotomic periods from the subfields of $\mathbb Q(e^{2\pi i /p})$ corresponding to the subgroups $<a> \subseteq \mathbb F_p^*.$


Author(s):  
João Campos Vargas

Let [Formula: see text] be an odd prime and [Formula: see text]. In the spirit of Artin’s conjecture, consider the system of two diagonal forms of degree [Formula: see text] in [Formula: see text] variables given by [Formula: see text] [Formula: see text] with [Formula: see text]. For [Formula: see text], this paper shows that this system has a non-trivial [Formula: see text]-adic solution for every [Formula: see text], and for every [Formula: see text], where [Formula: see text]. Moreover, for [Formula: see text], this system will have a non-trivial [Formula: see text]-adic solution for every [Formula: see text].


2020 ◽  
Vol 69 ◽  
pp. 225-246
Author(s):  
D. R. Heath-Brown

Christopher Hooley was one of the leading analytic number theorists of his day, world-wide. His early work on Artin’s conjecture for primitive roots remains the definitive investigation in the area. His greatest contribution, however, was the introduction of exponential sums into every corner of analytic number theory, bringing the power of Deligne’s ‘Riemann hypothesis’ for varieties over finite fields to bear throughout the subject. For many he was a figure who bridged the classical period of Hardy and Littlewood with the modern era. This biographical sketch describes how he succeeded in applying the latest tools to famous old problems.


2020 ◽  
Vol 213 ◽  
pp. 285-318
Author(s):  
Eugene Eisenstein ◽  
Lalit K. Jain ◽  
Wentang Kuo

Mathematika ◽  
2020 ◽  
Vol 66 (3) ◽  
pp. 577-611
Author(s):  
Miriam Sophie Kaesberg

2019 ◽  
Vol 372 (3) ◽  
pp. 1867-1911 ◽  
Author(s):  
Jörg Brüdern ◽  
Olivier Robert
Keyword(s):  

2018 ◽  
Vol 2020 (19) ◽  
pp. 6149-6168
Author(s):  
Michael Lipnowski ◽  
George J Schaeffer

Abstract We describe a novel method for bounding the dimension $d$ of the largest simple Hecke submodule of $S_{2}(\Gamma _{0}(N);\mathbb{Q})$ from below. Such bounds are of interest because of their relevance to the structure of $J_{0}(N)$, for instance. In contrast with previous results of this kind, our bound does not rely on the equidistribution of Hecke eigenvalues. Instead, it is obtained via a Hecke-compatible congruence between the target space and a space of modular forms whose Hecke eigenvalues are easily controlled. We prove conditional bounds, the strongest of which is $d\gg _{\epsilon } N^{1/2-\epsilon }$ over a large set of primes $N$, contingent on Soundararajan’s heuristics for the class number problem and Artin’s conjecture on primitive roots. For prime levels $N\equiv 7\mod 8,$ our method yields an unconditional bound of $d\geq \log _{2}\log _{2}(\frac{N}{8})$, which is larger than the known bound of $d\gg \sqrt{\log \log N}$ due to Murty–Sinha and Royer. A stronger unconditional bound of $d\gg \log N$ can be obtained in more specialized (but infinitely many) cases. We also propose a number of Maeda-style conjectures based on our data, and we outline a possible congruence-based approach toward the conjectural Hecke simplicity of $S_{k}(\textrm{SL}_{2}(\mathbb{Z});\mathbb{Q})$.


2018 ◽  
Vol 98 (1) ◽  
pp. 159-166 ◽  
Author(s):  
HONGWEI ZHU ◽  
MINJIA SHI

We study linear complementary dual four circulant codes of length $4n$ over $\mathbb{F}_{q}$ when $q$ is an odd prime power. When $q^{\unicode[STIX]{x1D6FF}}+1$ is divisible by $n$, we obtain an exact count of linear complementary dual four circulant codes of length $4n$ over $\mathbb{F}_{q}$. For certain values of $n$ and $q$ and assuming Artin’s conjecture for primitive roots, we show that the relative distance of these codes satisfies a modified Gilbert–Varshamov bound.


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