Results 21 to 30 of about 127 (41)

Fixed Points of Meromorphic Functions and Their Higher Order Differences and Shifts

open access: yesOpen Mathematics, 2019
In this paper, we investigate the relationships between fixed points of meromorphic functions, and their higher order differences and shifts, and generalize the case of fixed points into the more general case for first order difference and shift ...
Chen Hai-Ying, Zheng Xiu-Min
doaj   +1 more source

The Beckman-Quarles theorem for continuous mappings from C^n to C^n

open access: yes, 2006
Let varphi_n:C^n times C^n->C, varphi_n((x_1,...,x_n),(y_1,...,y_n))=sum_{i=1}^n (x_i-y_i)^2. We say that f:C^n->C^n preserves distance d>=0, if for each X,Y in C^n varphi_n(X,Y)=d^2 implies varphi_n(f(X),f(Y))=d^2. We prove: if n>=2 and a continuous f:C^
Tyszka, Apoloniusz
core   +1 more source

Transcendental holomorphic maps between real algebraic manifolds in a complex space

open access: yes, 2019
We give an example of a real algebraic manifold embedded in a complex space that does not satisfy the Nash-Artin approximation Property. This Nash-Artin approximation Property is closely related to the problem of determining when the biholomorphic ...
Rond, Guillaume
core   +2 more sources

New Characterization of Appell polynomials

open access: yes, 2016
We prove characterizations of Appell polynomials by means of symmetric property. For these polynomials, we establish a simple linear expression in terms of Bernoulli and Euler polynomials. As applications, we give interesting examples.
Bayad, Abdelmejid, Komatsu, Takao
core   +1 more source

The correlation between the convergence of subdivision processes and solvability of refinement equations. [PDF]

open access: yes, 2001
We consider a univariate two-scale difference equation, which is studied in approximation theory, curve design and wavelets theory. This paper analysis the correlation between the existence of smooth compactly supported solutions of this equation and the
Protassov, V. (Vladimir)
core   +6 more sources

Affine processes are regular

open access: yes, 2009
We show that stochastically continuous, time-homogeneous affine processes on the canonical state space $\Rplus^m \times \RR^n$ are always regular. In the paper of \citet{Duffie2003} regularity was used as a crucial basic assumption.
Keller-Ressel, Martin   +2 more
core   +4 more sources

Value distribution of meromorphic solutions of homogeneous and non-homogeneous complex linear differential-difference equations

open access: yesOpen Mathematics, 2016
In this paper, we investigate the value distribution of meromorphic solutions of homogeneous and non-homogeneous complex linear differential-difference equations, and obtain the results on the relations between the order of the solutions and the ...
Luo Li-Qin, Zheng Xiu-Min
doaj   +1 more source

Fixed points of the smoothing transform: Two-sided solutions

open access: yes, 2011
Given a sequence $(C,T) = (C,T_1,T_2,...)$ of real-valued random variables with $T_j \geq 0$ for all $j \geq 1$ and almost surely finite $N = \sup\{j \geq 1: T_j > 0\}$, the smoothing transform associated with $(C,T)$, defined on the set $\mathcal{P}(\R)$
Alsmeyer, Gerold, Meiners, Matthias
core   +1 more source

Geometric properties of basic hypergeometric functions

open access: yes, 2014
In this paper we consider basic hypergeometric functions introduced by Heine. We study mapping properties of certain ratios of basic hypergeometric functions having shifted parameters and show that they map the domains of analyticity onto domains convex ...
Agrawal, Sarita, Sahoo, Swadesh
core   +1 more source

Cosine and sine addition and subtraction law with an automorphism [PDF]

open access: yes, 2023
Let S be a semigroup. Our main result is that we describe the complex-valued solutions of the following functional equationsg(xσ(y)) = g(x)g(y) + f(x)f(y), x, y ∈ S,f(xσ(y)) = f(x)g(y) + f(y)g(x), x, y ∈ S,andf(xσ(y)) = f(x)g(y) - f(y)g(x), x, y ∈ S ...
Aserrar, Youssef, Elqorachi, Elhoucien
core   +1 more source

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