IDENTIFICATION OF FUNCTIONS IN HARDY SPACE ON A HALF-STRIP DOMAIN

Authors

DOI:

https://doi.org/10.31471/2304-7399-2025-21(79)-35-40

Keywords:

Hardy space, identification of signals, convolution equation.

Abstract

This paper explores a signal identification problem using a convolution. We identify the signal with some function belonging to the Hardy space in a domain outside the half-strip. For this, we use a test function belonging to the Hardy space in the half-strip. Signals generated by point singularities and singularities generated by a segment are considered. The exponential test functions are chosen. For some cases, the exact solutions are found, for others, a convolution is found, and the possibility of finding the desired signal is analyzed.

References

1. Nikolski N.V. Operators, Functions, and Systems: An Easy Reading. New York: Nikolski N., 2002. ISBN 0-8218-1083-9

2. Dilnyi V., Huk Kh. Identification of Unknown Filter in a Half-Strip. Acta Applicandae Mathematicae. 2020. Vol. 165. P. 199—205. https://doi.org/10.1007/s10440-019-00250-8

3. Dilnyi V. On cyclic functions in weighted Hardy spaces. J. Math. Phys. Anal. Geom. 2011. Vol. 7, № 1. P. 19–33.

4. Vinnitskii B. On zeros of functions analytic in a half plane and completeness of systems of exponents/ Ukr.Math J. 1994. Vol. 46. P. 514–532. https://doi.org/10.1007/BF01058515

5. Queffelec H., Queffelec M. A Review of Commutative Harmonic Аnalysis in Diophantine Approximation and Dirichlet Series - Singapore: Springer, Queffelec H., 2021. 287 p. ISBN 978-981-15-9669-8

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Published

2025-12-09

How to Cite

Dilnyi, V. M., & Pasternak, A. A. (2025). IDENTIFICATION OF FUNCTIONS IN HARDY SPACE ON A HALF-STRIP DOMAIN. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, (21(79), 35–40. https://doi.org/10.31471/2304-7399-2025-21(79)-35-40

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