23 resultados para Laplace transforms

em Bulgarian Digital Mathematics Library at IMI-BAS


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Mathematics Subject Classification: 33D15, 44A10, 44A20

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MSC 2010: 44A20, 33C60, 44A10, 26A33, 33C20, 85A99

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2000 Mathematics Subject Classification: 35A15, 44A15, 26A33

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This survey is devoted to some fractional extensions of the incomplete lumped formulation, the lumped formulation and the formulation of Lauwerier of the temperature field problem in oil strata. The method of integral transforms is used to solve the corresponding boundary value problems for the fractional heat equation. By using Caputo’s differintegration operator and the Laplace transform, new integral forms of the solutions are obtained. In each of the different cases the integrands are expressed in terms of a convolution of two special functions of Wright’s type.

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Mathematics Subject Classification: 43A20, 26A33 (main), 44A10, 44A15

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Mathematical Subject Classification 2010: 35R11, 42A38, 26A33, 33E12.

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Виржиния С. Кирякова - В този обзор илюстрираме накратко наши приноси към обобщенията на дробното смятане (анализ) като теория на операторите за интегриране и диференциране от произволен (дробен) ред, на класическите специални функции и на интегралните трансформации от лапласов тип. Показано е, че тези три области на анализа са тясно свързани и взаимно индуцират своето възникване и по-нататъшно развитие. За конкретните твърдения, доказателства и примери, вж. Литературата.

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MSC 2010: 44A15, 44A20, 33C60

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Image content interpretation is much dependent on segmentations efficiency. Requirements for the image recognition applications lead to a nessesity to create models of new type, which will provide some adaptation between law-level image processing, when images are segmented into disjoint regions and features are extracted from each region, and high-level analysis, using obtained set of all features for making decisions. Such analysis requires some a priori information, measurable region properties, heuristics, and plausibility of computational inference. Sometimes to produce reliable true conclusion simultaneous processing of several partitions is desired. In this paper a set of operations with obtained image segmentation and a nested partitions metric are introduced.

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The paper has been presented at the 12th International Conference on Applications of Computer Algebra, Varna, Bulgaria, June, 2006

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A generalized convolution with a weight function for the Fourier cosine and sine transforms is introduced. Its properties and applications to solving a system of integral equations are considered.

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Mathematics Subject Classification: 44A05, 46F12, 28A78

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2000 Mathematics Subject Classification: 35J05, 35C15, 44P05

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2000 Mathematics Subject Classification: 42B20, 42B25, 42B35

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2000 Mathematics Subject Classification: 33D15, 33D90, 39A13