Results 1 to 10 of about 2,365 (187)

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

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

PERIODIC TWISTS OF $\operatorname{GL}_{3}$-AUTOMORPHIC FORMS

open access: yesForum of Mathematics, Sigma, 2020
We prove that sums of length about $q^{3/2}$ of Hecke eigenvalues of automorphic forms on $\operatorname{SL}_{3}(\mathbf{Z})$ do not correlate with $q$-periodic functions with bounded Fourier transform.
EMMANUEL KOWALSKI   +3 more
doaj   +1 more source

Intelligent radar software defect classification approach based on the latent Dirichlet allocation topic model

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
Existing software intelligent defect classification approaches do not consider radar characters and prior statistics information. Thus, when applying these appaoraches into radar software testing and validation, the precision rate and recall rate of ...
Xi Liu   +6 more
doaj   +1 more source

Comparing human coding to two natural language processing algorithms in aspirations of people affected by Duchenne Muscular Dystrophy

open access: yesJournal of Methods and Measurement in the Social Sciences, 2022
Qualitative methods can enhance our understanding of constructs that have not been well portrayed and enable nuanced depiction of experience from study participants who have not been broadly studied.
Carolyn Emily Schwartz
doaj   +2 more sources

Integer factoring and compositeness witnesses

open access: yesJournal of Mathematical Cryptology, 2020
We describe a reduction of the problem of factorization of integers n ≤ x in polynomial-time (log x)M+O(1) to computing Euler’s totient function, with exceptions of at most xO(1/M) composite integers that cannot be factored at all, and at most x exp −cM ...
Pomykała Jacek, Radziejewski Maciej
doaj   +1 more source

Joint universality of Dirichlet L-functions and periodic Hurwitz zeta-functions

open access: yesMathematical Modelling and Analysis, 2012
In the paper, we prove that every system of analytic functions can be approximated simultaneously uniformly on compact subsets of some region by a collection consisting of shifts of Dirichlet L-functions with pairwise non-equivalent characters and ...
Kęstutis Janulis   +3 more
doaj   +1 more source

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