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Generalização da transformada de Fourier e suas consequências

Authors: Sevene, Gedeon Mateus;

Generalização da transformada de Fourier e suas consequências

Abstract

Nesta dissertação apresentamos um estudo de diferentes tipos de generalizações da Transformada de Fourier (clássica). É dada uma ênfase especial à Transformada de Fourier Fracionária. Um conjunto significativo de novas convoluções é aqui considerado e associado a essas transformações integrais gerais. Tais convoluções dão origem a várias consequências, entre as quais destacamos diferentes tipos de desigualdades de Young e novas classes de equações integrais (para as quais estudamos a sua solvabilidade). Além disso, também são referidas aplicações a outras ciências (como é o caso de propagação de ondas óticas e processamento de sinal).

In this dissertation we present a study of different types of generalizations of the (classical) Fourier Transform. A special emphasis is given to the Fractional Fourier Transform. A significant number of new convolutions are here considered and associated with those general integral transforms. Such convolutions give rise to several consequences among which we point out different kinds of Young inequalities and new classes of integral equations (to which we study their solvability). Moreover, applications to other sciences are also mentioned (as it is the case of optical wave propagation and signal processing).

Mestrado em Matemática e Aplicações

Country
Portugal
Related Organizations
Keywords

Transformada de Fourier Fracionária, Equação de Convolução, Transformada de Fourier, Desigualdade de Young., Convolução

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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