Results 1 to 10 of about 15 (15)

Identities Arising from Binomial-Like Formulas Involving Divisors of Numbers

open access: yesAnnales Mathematicae Silesianae, 2023
In this article, we derive a great number of identities involving the ω function counting distinct prime divisors of a given number n. These identities also include Pochhammer symbols, Fibonacci and Lucas numbers and many more.
Gryszka Karol
doaj   +1 more source

CYCLOTOMIC POLYNOMIALS WITH PRESCRIBED HEIGHT AND PRIME NUMBER THEORY

open access: yesMathematika, Volume 67, Issue 1, Page 214-234, January 2021., 2021
Abstract Given any positive integer n, let A(n) denote the height of the nth cyclotomic polynomial, that is its maximum coefficient in absolute value. It is well known that A(n) is unbounded. We conjecture that every natural number can arise as value of A(n) and prove this assuming that for every pair of consecutive primes p and p′ with p⩾127, we have ...
Alexandre Kosyak   +3 more
wiley   +1 more source

Learning linear non-Gaussian graphical models with multidirected edges

open access: yesJournal of Causal Inference, 2021
In this article, we propose a new method to learn the underlying acyclic mixed graph of a linear non-Gaussian structural equation model with given observational data.
Liu Yiheng, Robeva Elina, Wang Huanqing
doaj   +1 more source

Inequalities between height and deviation of polynomials

open access: yesOpen Mathematics, 2021
In this paper, for polynomials with real coefficients P,QP,Q satisfying ∣P(x)∣≤∣Q(x)∣| P\left(x)| \le | Q\left(x)| for each xx in a real interval II, we prove the bound L(P)≤cL(Q)L\left(P)\le cL\left(Q) between the lengths of PP and QQ with a constant ...
Dubickas Artūras
doaj   +1 more source

Several explicit formulas for (degenerate) Narumi and Cauchy polynomials and numbers

open access: yesOpen Mathematics, 2021
In this paper, with the aid of the Faà di Bruno formula and by virtue of properties of the Bell polynomials of the second kind, the authors define a kind of notion of degenerate Narumi numbers and polynomials, establish explicit formulas for degenerate ...
Qi Feng   +2 more
doaj   +1 more source

Cauchy-Riemann ̄∂-equations with some applications

open access: yesComplex Manifolds, 2022
This paper shows that given 0 < p < 3 and a complex Borel measure µ on the unit disk 𝔻 the inhomogeneous Cauchy-Riemann ...
Xiao Jie, Yuan Cheng
doaj   +1 more source

Taylor’s series expansions for real powers of two functions containing squares of inverse cosine function, closed-form formula for specific partial Bell polynomials, and series representations for real powers of Pi

open access: yesDemonstratio Mathematica, 2022
In this article, by virtue of expansions of two finite products of finitely many square sums, with the aid of series expansions of composite functions of (hyperbolic) sine and cosine functions with inverse sine and cosine functions, and in the light of ...
Qi Feng
doaj   +1 more source

Combinatorial and harmonic-analytic methods for integer tilings

open access: yesForum of Mathematics, Pi, 2022
A finite set of integers A tiles the integers by translations if $\mathbb {Z}$ can be covered by pairwise disjoint translated copies of A. Restricting attention to one tiling period, we have $A\oplus B=\mathbb {Z}_M$ for some $M\in \mathbb {N}$ and $B ...
Izabella Łaba, Itay Londner
doaj   +1 more source

Sums of Powers and Special Polynomials

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2020
In this paper, we discuss sums of powers 1p + 2p + + np and compute both the exponential and ordinary generating functions for these sums. We express these generating functions in terms of exponential and geometric polynomials and also show their ...
Boyadzhiev Khristo N.
doaj   +1 more source

On some special Legendre sums of the form

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
We prove that sums of the form with f(X), g(X) ∈ ℤ[X] can be explicitly computed whenever f and g are subject to some certain conditions which are defined in the paper.
Andrica Dorin, Crişan Vlad
doaj   +1 more source

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