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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

Weighted polynomial approximation methods for Cauchy singular integral equations in the non-periodic case /

Weber, Uwe, January 1900 (has links)
Diss.--Math.--Chemnitz--Technische Universität, 1999. / Bibliogr. p. 103-106.
82

Problèmes globaux en relativité générale

Loizelet, Julien Chruściel, Piotr T. January 2008 (has links) (PDF)
Thèse de doctorat : Mathématiques : Tours : 2008. / Titre provenant de l'écran-titre.
83

Cauchy interpolation for multi-variate and multi-derivative data

Kaufman, Jonathan, 1981- January 2007 (has links)
There is often a need to interpolate data that is obtained through experiment or computational analysis, because the data is difficult or expensive to obtain. An example is the scattering parameters of microwave devices, obtained through computationally intensive finite element (FE) analysis. Cauchy interpolation is an established solution to this problem. In this thesis it is extended to interpolate data over a multi-parameter space, when the data available includes not just the function to be interpolated, but also its derivatives with respect to each parameter. The finite element method (FEM) provides such derivatives. The new algorithm is applied to a simple RLC circuit test case, and to real data from a 3D FE analysis of a rectangular waveguide component, in a 4-parameter space. Results show the effectiveness of the approach taken.
84

On the Cauchy problem for the linearized GPKdV and gauge transformations for a quadratic pencil and AKNS system /

Yordanov, Russi Georgiev, January 1992 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 52-54). Also available via the Internet.
85

Asymptotic enumeration via singularity analysis

Lladser, Manuel Eugenio, January 2003 (has links)
Thesis (Ph. D.)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains x, 227 p.; also includes graphics Includes bibliographical references (p. 224-227). Available online via OhioLINK's ETD Center
86

Viskositätsapproximationen und schwache Lösungen für das System der eindimensionalen nichtlinearen Elastizitätsgleichungen

Göbel, Dieter. January 1993 (has links)
Thesis (doctoral)--Rheinische Friedrich-Wilhelms-Universität Bonn, 1992. / Includes bibliographical references (p. 85-89).
87

Die Navier-Stokesschen Gleichungen im Grenzfall verschwindender Viskosität mit Anwendungen auf numerische Approximationsverfahren.

Borchers, Wolfgang. Unknown Date (has links)
Universiẗat, Diss., 1987--Paderborn.
88

The Einstein-Vlasov-Maxwell system with spherical symmetry

Noundjeu, Pierre. Unknown Date (has links) (PDF)
Techn. Universiẗat, Diss., 2005--Berlin.
89

Comportamento assintótico da solução da equação generalizada de Benjamin-Bona-Mahony-Burger no espaço N-dimensional

Bonotto, Danusa de Lara January 2000 (has links)
Consideramos o problema de Cauchy associado à equação de Benjamin-Bona-Mahony em Rn, 1 ≥ n ≥ 3 com dissipação do tipo Burger. Provamos resultados de existência, unicidade e dependência contínua da solução em relação ao dado inicial. Também, obtemos o decaimento da solução nas normas de L2 (Rn.) e H 1 (Rn.) para 1 ≥ n ≥ 3. / Let's consider the Cauchy's problem associated to the Benjamin-Bona-Mahony equation in Rn, 1 ≥ n ≥ 3with a burger dissipation. We prove the existence, uniquiness and continuous dependence o f the solution. We analyse the norm decay of the solutions in L2 (Rn) and H1 (Rn) 1 ≥ n ≥ 3.
90

Construções dos números reais voltadas para os professores da rede básica de ensino / Construction of real numbers facing teachers of basic network of education

Ribeiro, Fernando Araújo January 2015 (has links)
RIBEIRO, Fernando Araújo. Construções dos números reais voltadas para os professores da rede básica de ensino. 2015. 66 f. Dissertação (Mestrado em Matemática em Rede Nacional) – Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2015. / Submitted by Rocilda Sales (rocilda@ufc.br) on 2015-07-08T12:51:51Z No. of bitstreams: 1 2015_dis_faribeiro.pdf: 951187 bytes, checksum: 92185e5a3e166ce810c863bdd0655726 (MD5) / Approved for entry into archive by Rocilda Sales(rocilda@ufc.br) on 2015-07-08T12:52:17Z (GMT) No. of bitstreams: 1 2015_dis_faribeiro.pdf: 951187 bytes, checksum: 92185e5a3e166ce810c863bdd0655726 (MD5) / Made available in DSpace on 2015-07-08T12:52:17Z (GMT). No. of bitstreams: 1 2015_dis_faribeiro.pdf: 951187 bytes, checksum: 92185e5a3e166ce810c863bdd0655726 (MD5) Previous issue date: 2015 / This work aims to show that the set of real numbers is a complete ordered field that, within an isomorphism, is unique. This work is aimed at all those who are interested in mathematics, especially for that high school math teacher who uses the real numbers of the set of properties without knowing the mathematical theory involved. Therefore, it is necessary to characterize the set of the real in order to prove their properties. Here, we use two buildings, namely: the real via Cauchy sequences due to Cantor and the real via Dedekind cuts. From these characterizations, we can build a field K equipped with the addition and multiplication operations which show that it meets the definition of field conditions. Set an order relation in K, we show that such a body is ordered and in addition, we show that every subset of K admits supreme, which means that such a field is complete. Finally, we show that any complete ordered field that can, perchance appear is a mere characterization of ℝ, which means that ℝ is unique, unless these possible other characterizations. This characterization will be called isomorphism which is a function bijetora of ℝ to K. / Este trabalho tem como objetivo mostrar que o conjunto dos números reais é um corpo ordenado completo e que, a menos de um isomorfismo, é único. Este trabalho é voltado para todos aqueles que tenham interesse em Matemática, sobretudo, para os professores de Matemática do ensino médio que utilizam as propriedades do conjunto dos números reais sem conhecer a teoria matemática envolvida. Para tanto, é necessário caracterizar o conjunto dos reais a fim de provar suas propriedades. Aqui, utilizamos duas construções, a saber: os reais via sequências de Cauchy devido a Cantor e os reais via Cortes de Dedekind. A partir dessas caracterizações, conseguimos construir um corpo K munido das operações de soma e multiplicação onde mostramos que ele cumpre as condições da definição de corpo. Definida uma relação de ordem em K, mostramos que tal corpo é ordenado e, além disso, conseguimos mostrar que todo subconjunto de K admite supremo, o que quer dizer que tal corpo é completo. Finalmente, mostramos que qualquer outro corpo ordenado completo que possa, por ventura, existir é uma mera caracterização de ℝ, o que quer dizer que ℝ é único, a menos dessas possíveis outras caracterizações. Tal caracterização será chamada de isomorfismo que é uma função bijetora de ℝ para K.

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