scholarly journals The Spectrum of Mapping Ideals of Type Variable Exponent Function Space of Complex Variables with Some Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Awad A. Bakery ◽  
Mustafa M. Mohammed
Keyword(s):  
Function Space ◽  
Variable Exponent ◽  
Entire Functions ◽  
Shift Operator ◽  
Complex Variables ◽  
Power Series Space ◽  
Series Space ◽  
Backward Shift ◽  
Type Variable ◽  
Formal Power

The topological and geometric behaviors of the variable exponent formal power series space, as well as the prequasi-ideal construction by s -numbers and this function space of complex variables, are investigated in this article. Upper bounds for s -numbers of infinite series of the weighted n th power forward and backward shift operator on this function space are being investigated, with applications to some entire functions.

scholarly journals A Generalization of Caristi’s Fixed Point Theorem in the Variable Exponent Weighted Formal Power Series Space

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Awad A. Bakery ◽  
M. H. El Dewaik
Keyword(s):  
Fixed Point ◽  
Fixed Point Theorem ◽  
Power Series ◽  
Formal Power Series ◽  
Point Theorem ◽  
Entire Functions ◽  
Caristi’S Fixed Point Theorem ◽  
Series Space ◽  
Formal Power ◽  
Caristi's Fixed Point Theorem

Suppose p n be sequence of positive reals. By H w p n , we represent the space of all formal power series ∑ n = 0 ∞ a n z n equipped with ∑ n = 0 ∞ λ a n / n + 1 p n < ∞ , for some λ > 0 . Various topological and geometric behavior of H w p n and the prequasi ideal constructs by s -numbers and H w p n have been considered. The upper bounds for s -numbers of infinite series of the weighted n -th power forward shift operator on H w p n with applications to some entire functions are granted. Moreover, we investigate an extrapolation of Caristi’s fixed point theorem in H w p n .

scholarly journals Mean-periodic functions

1980 ◽  
Vol 3 (2) ◽  
pp. 199-235 ◽  
Author(s):  
Carlos A. Berenstein ◽  
B. A. Taylor
Keyword(s):  
Partial Differential Equations ◽  
Periodic Function ◽  
Entire Functions ◽  
Convolution Equation ◽  
Complex Variables ◽  
Several Complex Variables ◽  
Exponential Polynomial ◽  
Periodic Functions ◽  
Open Questions ◽  
Constant Coefficients

We show that any mean-periodic functionfcan be represented in terms of exponential-polynomial solutions of the same convolution equationfsatisfies, i.e.,u∗f=0(μ∈E′(ℝn)). This extends ton-variables the work ofL. Schwartz on mean-periodicity and also extendsL. Ehrenpreis' work on partial differential equations with constant coefficients to arbitrary convolutors. We also answer a number of open questions about mean-periodic functions of one variable. The basic ingredient is our work on interpolation by entire functions in one and several complex variables.

scholarly journals ON CERTAIN SUB-SPACE OF X

2008 ◽  
Vol 5 (4) ◽  
pp. 660-668
Author(s):  
Baghdad Science Journal
Keyword(s):  
Entire Functions ◽  
Complex Variables ◽  
Several Complex Variables ◽  
Topological Properties

The study of properties of space of entire functions of several complex variables was initiated by Kamthan [4] using the topological properties of the space. We have introduced in this paper the sub-space of space of entire functions of several complex variables which is studied by Kamthan.

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