Integração numérica para funções compostas em domínios multidimensionais através de uma quadratura de Lebesgue
The present dissertation aims to introduce a numerical integration method, whose application will run on domains containing a high number of dimensions. In this regard, the developed methodology seeks to present a Lebesgue quadrature, which is based on partitions of the image of a function, where ea...
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Formato: | Dissertação |
Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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Endereço do item: | https://repositorio.ufrn.br/handle/123456789/58069 |
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Resumo: | The present dissertation aims to introduce a numerical integration method, whose application will run on domains containing a high number of dimensions. In this regard, the developed methodology seeks to present a Lebesgue quadrature, which is based on partitions of the image of a function, where each weight is associated with a value of the function defined in its image. For Riemann-Integrable functions, we demonstrate the existence of a Lebesgue quadrature and show how to construct quadratures of this type for composite functions, in which the method exhibited good efficiency, surpassing quasi-Monte Carlo methods. The method involves arbitrarily approximating the value of a given finite sum using information generated by a histogram, to demonstrate that the numerical integration of a composite function, whose argument’s density has been previously determined, can be evaluated very easily. |
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