Results 11 to 20 of about 654 (59)

Proof of the Collatz Conjecture

open access: yesTheoretical Mathematics & Applications, 2023
The Collatz conjecture (or 3n+1 problem) has been explored for about 86 years. In this article, we prove the Collatz conjecture. We will show that this conjecture holds for all positive integers by applying the Collatz inverse operation to the numbers ...
Bülent Sukuşu
semanticscholar   +1 more source

Cryptographic Algorithm Based on Prime Assignment

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2022
: Cryptography is a concept of protecting information and conversations which are transmitted through a public source, so that the send and receiver only read and process it.
M. Mahalakshmi
semanticscholar   +1 more source

Bernoulli numbers, convolution sums and congruences of coefficients for certain generating functions

open access: yesJournal of Inequalities and Applications, 2013
In this paper, we study the convolution sums involving restricted divisor functions, their generalizations, their relations to Bernoulli numbers, and some interesting applications.MSC: 11B68, 11A25, 11A67, 11Y70, 33E99.
Daeyeoul Kim   +2 more
semanticscholar   +2 more sources

Evaluation of the convolution sum involving the sum of divisors function for 22, 44 and 52

open access: yesOpen Mathematics, 2017
The convolution sum, ∑(l,m)∈N02αl+βm=nσ(l)σ(m), $ \begin{array}{} \sum\limits_{{(l\, ,m)\in \mathbb{N}_{0}^{2}}\atop{\alpha \,l+\beta\, m=n}} \sigma(l)\sigma(m), \end{array} $ where αβ = 22, 44, 52, is evaluated for all natural numbers n. Modular forms
Ntienjem Ebénézer
doaj   +1 more source

Evaluation of the convolution sums ∑al+bm=n lσ(l) σ(m) with ab ≤ 9

open access: yesOpen Mathematics, 2017
The generating functions of divisor functions are quasimodular forms of weight 2 and their products belong to a space of quasimodular forms of higher weight.
Park Yoon Kyung
doaj   +1 more source

THE NUMBER OF INTEGRAL SOLUTIONS TO AN EQUATION INVOLVING SUMS OF RADICALS

open access: yesActa Universitatis Apulensis, 2019
In this short note, we present a Galois-theoretic proof for the following result. Given an integer k ≥ 2 and fixed positive integers n1, . . . , nk, the number of solutions (x1, . . . , xk, y) ∈ (Z≥0) to the equation (1) is finite.
D. Andrica, George C. Ţurcaş
semanticscholar   +1 more source

On the sum of digits of the factorial [PDF]

open access: yes, 2014
Let b > 1 be an integer and denote by s_b(m) the sum of the digits of the positive integer m when is written in base b. We prove that s_b(n!) > C_b log n log log log n for each integer n > e, where C_b is a positive constant depending only on b.
Sanna, Carlo
core   +4 more sources

Eisenstein series and their applications to some arithmetic identities and congruences

open access: yesAdvances in Differential Equations, 2013
Utilizing the theory of elliptic curves over ℂ to the normalized lattice Λτ, its connection to the Weierstrass ℘-functions and to the Eisenstein series E4(τ) and E6(τ), we establish some arithmetic identities involving certain arithmetic functions and ...
Daeyeoul Kim   +2 more
semanticscholar   +2 more sources

SIMPLIFICATION OF COEFFICIENTS IN DIFFERENTIAL EQUATIONS ASSOCIATED WITH HIGHER ORDER FROBENIUS – EULER NUMBERS

open access: yes, 2017
In the paper, by virtue of the Faà di Bruno formula, some properties of the Bell polynomials of the second kind, and the inversion formulas of binomial numbers and the Stirling numbers of the first and second kinds, the authors simplify meaningfully and ...
Feng Qi (祁锋)   +2 more
semanticscholar   +1 more source

Generalizations of the Bell Numbers and Polynomials and Their Properties

open access: yes, 2017
In the paper, the authors present unified generalizations for the Bell numbers and polynomials, establish explicit formulas and inversion formulas for these generalizations in terms of the Stirling numbers of the first and second kinds with the help of ...
Feng Qi (祁锋)   +3 more
semanticscholar   +1 more source

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