Results 21 to 30 of about 43,404 (168)

Some characterizations of totients

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
An arithmetical function is said to be a totient if it is the Dirichlet convolution between a completely multiplicative function and the inverse of a completely multiplicative function. Euler's phi-function is a famous example of a totient.
Pentti Haukkanen
doaj   +1 more source

Identical equations for multiplicative functions [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
We examine identical equations for multiplicative functions and certain special cases, such as totients and quadratics. We confine ourselves to identical equations expressing the value f(mn) (or the value f(m)f(n)) nontrivially in terms of the values f(m/
Pentti Haukkanen
doaj   +1 more source

Multiplicative Square Functions

open access: yesRevista Matemática Iberoamericana, 2004
We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function.
González, María José, Nicolau, Artur
openaire   +3 more sources

Multiple Functions of Thioredoxins

open access: yesZeitschrift für Naturforschung C, 1978
Abstract Reduced thioredoxins from microbial and plant cells, both of cytoplasmic or chloroplast origin, are interchangeable in stimulating such diverse enzyme activities as ribonucleoside diphosphate reductase (E. coli) , PAPS sulfotransferase (Synechococcus), and fructose-1,6-bis-phosphatase (from spinach) in vitro.
W, Wagner, H, Follmann, A, Schmidt
openaire   +2 more sources

Hermite–Hadamard type inequalities for multiplicatively harmonic convex functions

open access: yesJournal of Inequalities and Applications, 2023
In this work, the notion of a multiplicative harmonic convex function is examined, and Hermite–Hadamard inequalities for this class of functions are established.
Serap Özcan, Saad Ihsan Butt
doaj   +1 more source

Osteoprotegerin: Multiple partners for multiple functions [PDF]

open access: yesCytokine & Growth Factor Reviews, 2013
Osteoprotegerin (OPG) is an essential secreted protein in bone turnover due to its role as a decoy receptor for the Receptor Activator of Nuclear Factor-kB ligand (RANKL) in the osteoclasts, thus inhibiting their differentiation. However, there are additional ligands of OPG that confer various biological functions.
Baud'huin, M.E.   +8 more
openaire   +3 more sources

On the General and Measurable Solutions of some Functional Equations

open access: yesAnnales Mathematicae Silesianae, 2018
The general solutions of two functional equations, without imposing any regularity condition on any of the functions appearing, have been obtained. From these general solutions, the Lebesgue measurable solutions have been deduced by assuming the function(
Nath Prem, Singh Dhiraj Kumar
doaj   +1 more source

Connection-Based Multiplicative Zagreb Indices of Dendrimer Nanostars

open access: yesJournal of Mathematics, 2021
The field of graph theory is broadly growing and playing a remarkable role in cheminformatics, mainly in chemistry and mathematics in developing different chemical structures and their physicochemical properties.
Aqsa Sattar   +2 more
doaj   +1 more source

A Novel Form of Multiplicative Gamma Function and Its Analytical Properties

open access: yesJournal of Function Spaces
In this article, we introduce and investigate a novel Euler-style multiplicative gamma function formulated within the framework of multiplicative calculus.
Sajedeh Norozpour   +3 more
doaj   +1 more source

Multiplicative polynomials and Fermat's little theorem for non-primes

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
Fermat's Little Theorem states that xp=x(modp) for x∈N and prime p, and so identifies an integer-valued polynomial (IVP) gp(x)=(xp−x)/p. Presented here are IVP's gn for non-prime n that complete the sequence {gn|n∈N} in a natural way.
Paul Milnes, C. Stanley-Albarda
doaj   +1 more source

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