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Dirichlet Characters, Gauss Sums, and Inverse Z Transform [PDF]

open access: yesAbstract and Applied Analysis, 2012
A generalized Möbius transform is presented. It is based on Dirichlet characters. A general algorithm is developed to compute the inverse Z transform on the unit circle, and an error estimate is given for the truncated series representation.
Jing Gao, Huaning Liu
doaj   +3 more sources

A generalization of Menon's identity with Dirichlet characters [PDF]

open access: yesInternational Journal of Number Theory, 2018
The classical Menon's identity [7] states that \begin{equation*}\label{oldbegin1} \sum_{\substack{a\in\Bbb Z_n^\ast }}\gcd(a -1,n)=\varphi(n) \sigma_{0} (n), \end{equation*} where for a positive integer $n$, $\Bbb Z_n^\ast$ is the group of units of the
Hu, Xiaoyu, Kim, Daeyeoul, Li, Yan
core   +2 more sources

Irrationality of values of L-functions of Dirichlet characters [PDF]

open access: yesJournal of the London Mathematical Society, 2019
In a recent paper with Sprang and Zudilin, the following result was proved: if $a$ is large enough in terms of $\varepsilon>0$, then at least $2^{(1-\varepsilon)\frac{\log a}{\log \log a}}$ values of the Riemann zeta function at odd integers between $3 ...
Fischler, Stéphane
core   +2 more sources

The mean value of the function d(n)/d*(n) in arithmetic progressions [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics, 2023
Let d(n) and d*(n) be, respectively, the number of divisors and the number of unitary divisors of an integer n≥1. A divisor d of an integer is to be said unitary if it is prime over n/d.
Ouarda Bouakkaz, Abdallah Derbal
doaj   +1 more source

Universality of Dirichlet L-functions with shifted characters

open access: yesLietuvos Matematikos Rinkinys, 2004
We study Dirichlet L-functions with shifted characters L(s, χ, H) = ⅀∞n=1 χ(n+H) ∕ ns, where H is an integer. Here we obtain a joint universality theorem for such functions.
Ramūnas Garunkštis
doaj   +3 more sources

Exceptional characters and nonvanishing of Dirichlet L-functions [PDF]

open access: yesMathematische Annalen, 2021
Let $ $ be a real primitive character modulo $D$. If the $L$-function $L(s, )$ has a real zero close to $s=1$, known as a Landau-Siegel zero, then we say the character $ $ is exceptional. Under the hypothesis that such exceptional characters exist, we prove that at least fifty percent of the central values $L(1/2, )$ of the Dirichlet $L$-functions $
Hung M. Bui   +2 more
openaire   +2 more sources

An orthogonality relation for $\mathrm {GL}(4, \mathbb R) $ (with an appendix by Bingrong Huang)

open access: yesForum of Mathematics, Sigma, 2021
Orthogonality is a fundamental theme in representation theory and Fourier analysis. An orthogonality relation for characters of finite abelian groups (now recognized as an orthogonality relation on $\mathrm {GL}(1)$) was used by Dirichlet to prove ...
Dorian Goldfeld   +2 more
doaj   +1 more source

Average value of the divisor class numbers of real cubic function fields

open access: yesOpen Mathematics, 2023
We compute an asymptotic formula for the divisor class numbers of real cubic function fields Km=k(m3){K}_{m}=k\left(\sqrt[3]{m}), where Fq{{\mathbb{F}}}_{q} is a finite field with qq elements, q≡1(mod3)q\equiv 1\hspace{0.3em}\left(\mathrm{mod}\hspace{0 ...
Lee Yoonjin, Lee Jungyun, Yoo Jinjoo
doaj   +1 more source

A Bound for a Sum of Products of Two Characters and Its Application

open access: yesMathematics, 2023
Using the exponent pair method, a bound is derived for the sum ∑manb≤xχ1a(m)χ2b(n), where a,b are fixed positive integers, χ1,χ2 are primitive Dirichlet characters modulo q1 and q2, respectively, and χ1a,χ2b are not principal characters.
Teerapat Srichan
doaj   +1 more source

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