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In this paper, we establish the expected order of magnitude of the $k$th-moment of quadratic Dirichlet $L$-functions associated to hyperelliptic curves of genus $g$ as well as of prime moduli over a fixed finite field $\mathbb{F}_{q}$ for…

Number Theory · Mathematics 2022-10-27 Peng Gao , Liangyi Zhao

In this paper, we obtain under the assumption of the Generalized Riemann Hypothesis upper bounds for all high integral moments of sums of Fourier coefficients of a given modular form twisted by quadratic Dirichlet characters. We show the…

Number Theory · Mathematics 2025-09-25 Peng Gao , Yuetong Zhao

We prove an explicit upper bound of the function $S(t,\chi)$, defined by the argument of Dirichlet $L$-functions. An explicit upper bound of the function $S_1(t)$, defined by the integral of the argument of the Riemann zeta-function, have…

Number Theory · Mathematics 2014-07-28 Takahiro Wakasa

We give an explicit upper bound for non-principal Dirichlet $L$-functions on the line $s=1+it$. This result can be applied to improve the error in the zero-counting formulae for these functions.

Number Theory · Mathematics 2014-09-09 Adrian Dudek

Assuming the Generalized Riemann Hypothesis, we provide uniform upper bounds with explicit main terms for moduli of $\left(\cL'/\cL\right)(s)$ and $\log{\cL(s)}$ for $1/2+\delta\leq\sigma<1$, fixed $\delta\in(0,1/2)$ and for functions in…

Number Theory · Mathematics 2024-08-15 Neea Palojärvi , Aleksander Simonič

This paper contains new explicit upper bounds for the number of zeroes of Dirichlet L-functions and Dedekind zeta-functions in rectangles.

Number Theory · Mathematics 2015-07-02 T. S. Trudgian

We devise heuristics using multiple Dirichlet series to predict asymptotic formulas for shifted moments of (1) the family of Dirichlet $L$-functions of all even primitive characters of conductor $\leq Q$, with $Q$ a parameter tending to…

Number Theory · Mathematics 2025-01-23 Siegfred Baluyot , Martin Čech

We compute the fourth moment of Dirichlet L-functions at the central point for prime moduli, with a power savings in the error term.

Number Theory · Mathematics 2013-03-27 Matthew P. Young

We obtain optimal lower bounds for moments of theta functions. On the other hand, we also get new upper bounds on individual theta values and moments of theta functions on average over primes. The upper bounds are based on bounds of…

Number Theory · Mathematics 2015-06-08 Marc Munsch , Igor E. Shparlinski

The main purpose of this paper is to establish bounds on the second moment of $L\big(\tfrac{1}{2}+it,\chi\big)$, averaged over families of fixed order characters. A discrete version of the main result is also stated, from which zero-density…

Number Theory · Mathematics 2023-11-06 C. C. Corrigan

For any large prime $q$, $x \leq 1$ and any real $k\geq 2$, we prove a lower bound for the following $2k$-th moment \begin{equation*} \sum_{\substack{\chi \in X_q^*}} \Big| \sum_{n\leq x} \chi(n)\lambda(n)\Big|^{2k}, \end{equation*} where…

Number Theory · Mathematics 2025-11-05 Peng Gao , Liangyi Zhao

We study the second moment of Dirichlet $L$-functions to a large prime modulus $q$ twisted by the square of an arbitrary Dirichlet polynomial. We break the $\frac{1}{2}$-barrier in this problem, and obtain an asymptotic formula provided…

Number Theory · Mathematics 2018-09-03 H. M. Bui , Kyle Pratt , Nicolas Robles , Alexandru Zaharescu

We consider a sum of the derivatives of Dirichlet $L$-functions over the zeros of Dirichlet $L$-functions. We give an asymptotic formula for the sum.

Number Theory · Mathematics 2021-06-04 Hirotaka Kobayashi

Best possible bounds are obtained for the concentration function of an additive arithmetic function on sequences of shifted primes.

Number Theory · Mathematics 2008-02-03 P. D. T. A. Elliott

We study the $2k$-th moment of central values of the family of primitive cubic and quartic Dirichlet $L$-functions. We establish sharp lower bounds for all real $k \geq 1/2$ unconditionally for the cubic case and under the Lindel\"of…

Number Theory · Mathematics 2022-10-21 Peng Gao , Liangyi Zhao

We prove that the Dirichlet $L$-functions associated with Dirichlet characters in $\mathbb{F}_{q}[x]$ are universal. That is, given a modulus of high enough degree, $L$-functions with characters to this modulus can be found that approximate…

Number Theory · Mathematics 2023-01-12 J. C. Andrade , S. M. Gonek

The objective of this paper is to obtain asymptotic results for shifted sums of multiplicative functions of the form $g \ast 1$, where the function $g$ satisfies the Ramanujan conjecture and has conjectured upper bounds on square moments of…

Number Theory · Mathematics 2025-07-08 Jiseong Kim

We obtain an asymptotic formula for the fourth moment of quadratic Dirichlet $L$--functions over $\mathbb{F}_q[x]$, as the base field $\mathbb{F}_q$ is fixed and the genus of the family goes to infinity. According to conjectures of Andrade…

Number Theory · Mathematics 2016-09-06 Alexandra Florea

We establish an asymptotic formula with a power-saving error term for the twisted mixed moment of Dirichlet $L$-functions and automorphic $L$-functions twisted by all primitive characters modulo $q$, valid for all admissible moduli. As a…

Number Theory · Mathematics 2025-12-11 Zhenpeng Tang , Xiaosheng Wu

Assuming the Riemann Hypothesis we obtain an upper bound for the moments of the Riemann zeta-function on the critical line. Our bound is nearly as sharp as the conjectured asymptotic formulae for these moments. The method extends to moments…

Number Theory · Mathematics 2008-02-09 K. Soundararajan