Results 1 to 10 of about 7,119 (103)

Some identities on generalized harmonic numbers and generalized harmonic functions

open access: yesDemonstratio Mathematica, 2023
The harmonic numbers and generalized harmonic numbers appear frequently in many diverse areas such as combinatorial problems, many expressions involving special functions in analytic number theory, and analysis of algorithms.
Kim Dae San, Kim Hyekyung, Kim Taekyun
doaj   +2 more sources

Theoretical and experimental study into laser-induced gold nanoparticles for superior surface-enhanced raman spectroscopy applications [PDF]

open access: yesScientific Reports
This study presents a comprehensive theoretical and experimental investigation into the fabrication of three-dimensional gold nanostructures with tailored optical properties using a laser-induced method, aimed at enhancing applications based on localized
Nader Javanmard   +2 more
doaj   +2 more sources

On sums with generalized harmonic numbers via Euler's transform [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics, 2023
In this paper, we define the generalized hyperharmonic numbers of order r, Hₙʳ(σ) and get some identities involving these numbers by using Euler's transform.
Neşe Ömür   +2 more
doaj   +1 more source

On generalized hyperharmonic numbers of order r, Hʳₙ,ₘ(σ) [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics, 2023
In this paper, we define generalized hyperharmonic numbers of order r, Hₙₘʳ(σ), for m∈ℤ⁺ and give some applications by using generating functions of these numbers.
Sibel Koparal   +2 more
doaj   +1 more source

Lerch-harmonic numbers related to Lerch transcendent

open access: yesMathematical and Computer Modelling of Dynamical Systems, 2023
Harmonic numbers and generalized harmonic numbers have been studied in connection with combinatorial problems, many expressions involving special functions in analytic number theory and analysis of algorithms.
Taekyun Kim   +3 more
doaj   +1 more source

Some Identities with Special Numbers

open access: yesCumhuriyet Science Journal, 2022
In this paper, we derive new identities which are related to some special numbers and generalized harmonic numbers H_n (α) by using the argument of the generating function given in [3] and comparing the coefficients of the generating functions.
Sibel Koparal   +2 more
doaj   +1 more source

Euler-type sums involving multiple harmonic sums and binomial coefficients

open access: yesOpen Mathematics, 2021
In this paper, we mainly show that generalized Euler-type sums of multiple harmonic sums with reciprocal binomial coefficients can be expressed in terms of rational linear combinations of products of classical multiple zeta values (MZVs) and multiple ...
Si Xin
doaj   +1 more source

Note on the Higher-Order Derivatives of the Hyperharmonic Polynomials and the r-Stirling Polynomials of the First Kind

open access: yesAxioms, 2022
In this paper, we focus on the higher-order derivatives of the hyperharmonic polynomials, which are a generalization of the ordinary harmonic numbers. We determine the hyperharmonic polynomials and their successive derivatives in terms of the r-Stirling ...
José L. Cereceda
doaj   +1 more source

Multifold bunch splitting in a high-intensity medium-energy proton synchrotron

open access: yesResults in Physics, 2022
Bunch splitting is an RF manipulation method of changing the bunch structure, bunch numbers and bunch intensity in a high-intensity synchrotron that serve as the injector for a particle collider.
Linhao Zhang, Min Chen, Jingyu Tang
doaj   +1 more source

Challenges in the Electromagnetic Design of Multiphase Machines: Winding and Equivalent Circuit Parameters

open access: yesEnergies, 2021
The usage of multiphase electrical drives expands the operation possibilities of electrical machines and opens new directions of research on inverter-fed electrical machines.
Jan Laksar, Radek Cermak, Karel Hruska
doaj   +1 more source

Home - About - Disclaimer - Privacy