Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform
Abstract
:1. Introduction
- (i)
- (ii)
- (iii)
- (ii) Integrating by parts, we have
- (iii) Using (5) and Proposition 1(i),(ii), we have
- The corresponding inversion formula of (7) is given by
2. Coupled Fractional Fourier Transform
- We have
- Continuing in this way, we have
- (i)
- (ii)
- (iii)
- (iv)
- The operator is a linear and continuous mapping from to .
- Assume that and t be any three positive integers. Then, by Proposition 3(iii), for any sequence of functions , we have
- if in .
- which shows the continuity of . □
3. Coupled Fractional Fourier Transform of Tempered Distributions
- Now, for all , we have for any
4. Pseudo-Differential Operators
- This completes the proof. □
5. Application of the Coupled Fractional Fourier Transform to a Generalized Heat Equation
- From (32), we have
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
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Das, S.; Mahato, K.; Zayed, A.I. Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform. Axioms 2024, 13, 296. https://doi.org/10.3390/axioms13050296
Das S, Mahato K, Zayed AI. Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform. Axioms. 2024; 13(5):296. https://doi.org/10.3390/axioms13050296
Chicago/Turabian StyleDas, Shraban, Kanailal Mahato, and Ahmed I. Zayed. 2024. "Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform" Axioms 13, no. 5: 296. https://doi.org/10.3390/axioms13050296
APA StyleDas, S., Mahato, K., & Zayed, A. I. (2024). Characterization of Pseudo-Differential Operators Associated with the Coupled Fractional Fourier Transform. Axioms, 13(5), 296. https://doi.org/10.3390/axioms13050296