scholarly journals Approximation of functions by Complex conformable derivative bases in Frechet spaces

2021 ◽  
Author(s):  
Gamal HAssan ◽  
Emad Abdel-salam ◽  
Rashwan Rashwan
Keyword(s):  
Fractional Integral ◽  
Entire Functions ◽  
Conformable Fractional Derivative ◽  
Growth Order ◽  
Fréchet Spaces ◽  
Conformable Derivative ◽  
Approximation Of Functions ◽  
Integral Bases ◽  
Order And Type ◽  
Conformable Fractional Integral

In the present paper the representation, in different domains, of analytic functions by complex conformable fractional derivative bases (CCFDB) and complex conformable fractional integral bases (CCFIB) in Frechet space are investigated . Theorems are proved to show that such representation is possible in closed disks, open disks, open regions surrounding closed disks, at the origin and for all entire functions. Also, some results concerning the growth order and type of CCFDB and CCFIB are determined. Moreover the T-property of CCFDB and CCFIB are dis- cussed. The obtained results recover some known results when alpha = 1. Finally, some applications to the CCFDB and CCFIB of Bernoulli, Euler, Bessel and Chebyshev polynomials have been studied.

scholarly journals Improvement on Conformable Fractional Derivative and Its Applications in Fractional Differential Equations

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Feng Gao ◽  
Chunmei Chi
Keyword(s):  
Differential Equations ◽  
Fractional Derivative ◽  
Fractional Differential Equations ◽  
Caputo Fractional Derivative ◽  
Physical Meaning ◽  
Fractional Integral ◽  
Conformable Fractional Derivative ◽  
Conformable Derivative ◽  
Fractional Differential ◽  
Definition Of

In this paper, we made improvement on the conformable fractional derivative. Compared to the original one, the improved conformable fractional derivative can be a better replacement of the classical Riemann-Liouville and Caputo fractional derivative in terms of physical meaning. We also gave the definition of the corresponding fractional integral and illustrated the applications of the improved conformable derivative to fractional differential equations by some examples.

scholarly journals The analytical solution of Van der Pol and Lienard differential equations within conformable fractional operator by retarded integral inequalities

2019 ◽  
Vol 52 (1) ◽  
pp. 204-212 ◽  
Author(s):  
Fuat Usta ◽  
Mehmet Zeki Sarıkaya
Keyword(s):  
Differential Equations ◽  
Fractional Integral ◽  
Existence Of Solutions ◽  
Integral Inequalities ◽  
Fractional Operator ◽  
Van Der Pol ◽  
Global Existence Of Solutions ◽  
Explicit Bounds ◽  
Fractional Differential ◽  
Conformable Fractional Integral

AbstractIn this study we introduced and tested retarded conformable fractional integral inequalities utilizing non-integer order derivatives and integrals. In line with this purpose, we used the Katugampola type conformable fractional calculus which has several practical properties. These inequalities generalize some famous integral inequalities which provide explicit bounds on unknown functions. The results provided here had been implemented to the global existence of solutions to the conformable fractional differential equations with time delay.

New k-Conformable Fractional Integral Inequalities

2020 ◽  
pp. 35-47
Author(s):  
Muhammad Uzair Awan ◽  
Muhammad Aslam Noor ◽  
Sadia Talib ◽  
Khalida Inayat Noor ◽  
Themistocles M. Rassias
Keyword(s):  
Fractional Integral ◽  
Integral Inequalities ◽  
Conformable Fractional Integral

scholarly journals New Modified Conformable Fractional Integral Inequalities of Hermite–Hadamard Type with Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-14 ◽  
Author(s):  
Thabet Abdeljawad ◽  
Pshtiwan Othman Mohammed ◽  
Artion Kashuri
Keyword(s):  
Fractional Integral ◽  
Integral Inequalities ◽  
Fractional Operators ◽  
Special Means ◽  
Conformable Fractional Integral ◽  
Fractional Parameter

In this study, a few inequalities of Hermite–Hadamard type are constructed via the conformable fractional operators so that the normal version is recovered in its limit for the conformable fractional parameter. Finally, we present some examples to demonstrate the usefulness of conformable fractional inequalities in the context of special means of the positive numbers.

Sufficient sets in weighted Fréchet spaces of entire functions

2013 ◽  
Vol 54 (4) ◽  
pp. 575-587 ◽  
Author(s):  
A. V. Abanin ◽  
V. A. Varziev
Keyword(s):  
Entire Functions ◽  
Fréchet Spaces

scholarly journals Approximation characteristics of the isotropic Nikol'skii-Besov functional classes

2021 ◽  
Vol 13 (3) ◽  
pp. 851-861
Author(s):  
S.Ya. Yanchenko ◽  
O.Ya. Radchenko
Keyword(s):  
Exponential Type ◽  
Lebesgue Space ◽  
Entire Functions ◽  
Exact Order ◽  
Periodic Functions ◽  
Approximation Of Functions ◽  
Several Variables ◽  
Functions Of Exponential Type ◽  
Functional Classes ◽  
Mixed Smoothness

In the paper, we investigates the isotropic Nikol'skii-Besov classes $B^r_{p,\theta}(\mathbb{R}^d)$ of non-periodic functions of several variables, which for $d = 1$ are identical to the classes of functions with a dominant mixed smoothness $S^{r}_{p,\theta}B(\mathbb{R})$. We establish the exact-order estimates for the approximation of functions from these classes $B^r_{p,\theta}(\mathbb{R}^d)$ in the metric of the Lebesgue space $L_q(\mathbb{R}^d)$, by entire functions of exponential type with some restrictions for their spectrum in the case $1 \leqslant p \leqslant q \leqslant \infty$, $(p,q)\neq \{(1,1), (\infty, \infty)\}$, $d\geq 1$. In the case $2<p=q<\infty$, $d=1$, the established estimate is also new for the classes $S^{r}_{p,\theta}B(\mathbb{R})$.

scholarly journals The left conformable fractional Hermite-Hadamard type inequalities for convex functions

Filomat ◽  
2019 ◽  
Vol 33 (8) ◽  
pp. 2417-2430
Author(s):  
Sercan Turhan
Keyword(s):  
Convex Functions ◽  
Fractional Integral ◽  
Type Inequality ◽  
Conformable Fractional Integral

In this paper, a new fractional Hermite-Hadamard type inequality for convex functions is obtained by using only the left conformable fractional integral. Also, to have new fractional trapezoid and midpoint type inequalities for the differentiable convex functions, two new equalities are proved.

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