Results 1 to 10 of about 17,850 (309)

Manifolds of Difference Polynomials [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1948
1. It is the purpose of this paper to develop in some detail the structure of the manifolds determined by systems of difference polynomials. Our results will necessarily be confined to the case of polynomials in an abstract field, since a suitable existence theorem for analytic difference equations is not available. The ideal theory, developed by J. F.
Richard M. Cohn
openalex   +3 more sources

Difference inequalities for polynomials in $L_0$

open access: diamondMatematychni Studii, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
É. A. Storozhenko
openalex   +3 more sources

Value Sharing Results for q-Shifts Difference Polynomials [PDF]

open access: goldDiscrete Dynamics in Nature and Society, 2013
We investigate the zero distribution of q-shift difference polynomials of meromorphic functions with zero order and obtain some results that extend previous results of K. Liu et al.
Yong Liu   +3 more
doaj   +2 more sources

Uniqueness of difference polynomials

open access: goldAIMS Mathematics, 2021
<abstract><p>Let $ f(z) $ be a transcendental meromorphic function of finite order and $ c\in\Bbb{C} $ be a nonzero constant. For any $ n\in\Bbb{N}^{+} $, suppose that $ P(z, f) $ is a difference polynomial in $ f(z) $ such as $ P(z, f) = a_{n}f(z+nc)+a_{n-1}f(z+(n-1)c)+\cdots+a_{1}f(z+c)+a_{0}f(z) $, where $ a_{k} (k = 0, 1, 2, \cdots, n) $
Xiaomei Zhang, Xiang Chen
openalex   +4 more sources

On Value Distribution of Difference Polynomials of Meromorphic Functions [PDF]

open access: goldAbstract and Applied Analysis, 2011
We study the value distribution of the difference counterpart Δf(z)−af(z)n of f′(z)−af(z)n and obtain an almost direct difference analogue of results of Hayman.
Zong-Xuan Chen
doaj   +2 more sources

Alternatives to polynomial trend-corrected differences-in-differences models [PDF]

open access: greenApplied Economics Letters, 2018
A common problem with differences-in-differences (DD) estimates is the failure of the parallel-trend assumption.
Vincent Vandenberghe
openalex   +6 more sources

A Review of q-Difference Equations for Al-Salam–Carlitz Polynomials and Applications to U(n + 1) Type Generating Functions and Ramanujan’s Integrals

open access: yesMathematics, 2023
In this review paper, our aim is to study the current research progress of q-difference equations for generalized Al-Salam–Carlitz polynomials related to theta functions and to give an extension of q-difference equations for q-exponential operators and q-
Jian Cao   +3 more
doaj   +1 more source

On the generalized difference polynomials [PDF]

open access: yesPacific Journal of Mathematics, 1990
Factorization properties of a class of polynomials F in two indeterminates with the coefficients in an algebraically closed field are investigated. This class includes the generalized difference polynomials considered by \textit{L. A. Rubel} and \textit{S. S. Abhyankar} [J. Indian Math. Soc., New Ser. 43, 69-78 (1979; Zbl 0532.12021)] and by \textit{L.
Panaitopol, L., \cStefănescu, D.
openaire   +3 more sources

Discrete Hypergeometric Legendre Polynomials

open access: yesMathematics, 2021
A discrete analog of the Legendre polynomials defined by discrete hypergeometric series is investigated. The resulting polynomials have qualitatively similar properties to classical Legendre polynomials.
Tom Cuchta, Rebecca Luketic
doaj   +1 more source

A NEW CHARACTERIZATION OF SYMMETRIC DUNKL AND \(q\)-DUNKL-CLASSICAL ORTHOGONAL POLYNOMIALS

open access: yesUral Mathematical Journal, 2023
In this paper, we consider the following \(\mathcal{L}\)-difference equation $$\Phi(x) \mathcal{L}P_{n+1}(x)=(\xi_nx+\vartheta_n)P_{n+1}(x)+\lambda_nP_{n}(x),\quad n\geq0,$$where \(\Phi\) is a monic polynomial (even), \(\deg\Phi\leq2\), \(\xi_n ...
Yahia Habbachi
doaj   +1 more source

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