# metadata.dc.description[].value
Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2023, Director: Joaquim Ortega Cerdà

# metadata.dc.description.abstract[].value
[en] We study systems of exponentials as subsets of square-integrable functions on an interval, proving that if a set of frequencies is a small enough perturbation of the integers, then the associated system of exponentials is a Riesz basis. We also prove that this result can be extended to complex frequencies that lie in a horizontal strip in the complex plane.

# metadata.dc.rights[].value
cc-by-nc-nd (c) David Arribas Viera, 2023

# metadata.dc.source[].value
Treballs Finals de Grau (TFG) - Matemàtiques