3125532 documents found, page 8451 of 312554
Códigos lineares disjuntos e corpos de funções algébricas
Silva, Pryscilla dos Santos FerreiraIn this work, based on algebraic function fields, we give constructions of disjoint linear codes. In addition,we study the asymptotic behavior of disjoint linear codes from our constructions.; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; Neste trabalho, baseados em corpos de funções algébricas, forneceremos construções de códigos lineares disjuntos. Além disso, nós estudaremos comportame...
O problema das 4 retas do calculo de Schubert
Lisboa, Viviane de JesusIn this dissertation we expose the solve the four line problem in Schubert Calculus using the Plucker embedding, giving emphasis to the study of the relative position of the four given lines in P3, this allows us to obtain an explicit description of the solution's set as well as to give the precise meaning to the notion of general position. In chapter 1, we insert the notion of projective space and other relate...
Controle Hierárquico da Equação da Onda
Santiago, Claudemir RodriguesThe present work has the distributed control v applied to the linear wave's equation. We seek to reach two objective, one of the kind Controllability and another the not system state distance to a state y2 (x; t) predefined. This is an problem of multicriteria optimization, and to solves him, introduce the notion Stackelberg's Optimal Control (classical in economy), in which we divide v into two, tell v1 and v2...
Uma Representação de Weierstrass para Superfícies Mínimas em H3 e H2 × R.
Roque, Alejandro CaicedoThe Weierstrass representation of minimal surfaces in R3 and its generalization to Rn shows is a very useful tool in the study of minimal surfaces in these spaces. In this work we want to describe a type Weierstrass representation for immersions simply connected in the group of Heisenberg H3. Using applications harmonics is possible obtain a formula for general representation, type Weierstrass for minimal immer...
Estudo dos campos vetoriais polinomiais quadráticos que possuem integral primei...
Cruz, Claudemir Mota daThis work was dedicated to classify all the global phase portraits of the quadratic polynomial vector fields having a rational first integral of degree three. For this, techniques were used as blow-up, classification of singular points, invariant curves for a system of ordinary diferential equations and vector fields induced on the sphere.; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; Es...
Classificação de Automorfismos de Grupos Finitos
Albuquerque, Flávio Alves deIn this paper we study finite Abelian groups, where state and prove the fundamental theorem of finitely generated abelian groups, as well as determine a characterization of automorphisms of a p-group, moreover, we exhibit an algorithm that determines the count of the number of automorphisms of p-groups. Finally, we show the automorphisms of the non-Abelian dihedral group.; Coordenação de Aperfeiçoamento de Pess...
Existência de Soluções Simétricas e Não-Simétricas para uma Classe de Equações ...
Santos, Edjane Oliveira dosIn this work, we establish the existence of a positive symmetric solution and a nonsymmetric solution which changes sing, for the semilinear elliptic problem ---u + V (z)u = f(z; u); u 2 H1(RN); where N - 4; V : RN ! R is a non-negative potential and f : RN-R ! R is a continuous function. To achieve these results, we use the Mountain Pass Theorem, the Principle of Symmetric Criticality and compactness results.;...
Folheações e curvas estáticas no plano projetivo
Mialaret Júnior, Marco Aurélio TomazThe present work discusses a study of extactic curves in the projective plane, providing a method that guarantees the existence of -rst integrals for certain vector fields. To achieve this goal, this study covers the following topics: vector fields, first integrals (with the main result presented in Jouanolou's Theorem), holomorphic foliations (in particular, foliations on the projective plane) and algebraic so...
O Teorema de Bohnenblust-Hille
Alarcón, Daniel NúñezThe Bohnenblust-Hille Theorem, proved in 1931 in the prestigious journal Annals of Mathematics, asserts that if U : lN 1 ----- lN 1 --! K is an n-linear form and N is a positive integer N, then 0@ N X i1;:::;in=1 jU(ei1 ; :::; ein)j 2n n+11A n+1 2n - Cn kUk , with Cn = n n+1 2n 2 n--1 2 . After a long time overlooked, this result has been explored in the recent years. In this work we detail a beautiful proof of...
Resultados de coincidência para operadores multilineares múltiplo somantes
Rodríguez, Diana Marcela SerranoIn this work, we present some properties of the class of multiple summing multilinear operators. We summarize the theory with the aim of showing in details recent results such as coincidence results, inclusion results and results involving cotype.; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; No presente trabalho, estudamos algumas propriedades dos operadores multilineares múltiplo soman...