Decomposição de grupos e invariantes ends

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dualidade de Poincaré e invariantes cohomológicos

Pós-graduação em Matemática - IBILCE

Immunity in plants and animals: common ends through different means using similar tools

A comparative approach is potentially useful for understanding the role of mammal innate immunity role in stimulating adaptive immunity as well as the relationship between these two types of immune strategies. Considerable progress has been made in the elucidation of the co-ordinated events involved in plant perception of infection and their mobilisation of defence responses. Although lacking immunoglobulin molecules, circulating cells, and phagocytic processes, plants successfully use pre-formed physical and chemical innate defences, as well as inducible adaptive immune strategies. In the present paper, we review some shared and divergent immune aspects present in both animals and plants. (C) 2002 Elsevier B.V. All rights reserved.

Invariantes homológicos relativos e dualidade de Poincaré

Pós-graduação em Matemática - IBILCE

As origens da teoria dos invariantes na Inglaterra e o Mécanique Analytique de Lagrange (1788)

Pós-graduação em Educação Matemática - IGCE

Um estudo sobre certos invariantes homológicos relativos duais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Decomposição de grupos de dualidade de Poincaré, obstruções sing e invariantes cohomológicos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cohomologia de grupos e invariante algébricos

Pós-graduação em Matemática - IBILCE

O amor tudo vence: invariantes e variantes na narrativa

Tendo como embasamento teórico a semiótica greimasiana, faz-se análise comparativa da história de Cinderela, na versão de Charles Perrault, com dois filmes e um conto de Guimarães Rosa, para verificar o modo como o tema “o amor tudo vence” é tratado nesses textos. A história de Cinderela renova-se, recobrindo-se com novas figuras, como conseqüência da alteração nos traços sêmicos dos papéis de príncipe e de princesa. Palavras-chave: Semiótica greimasiana; narrativa; invariantes; variantes; Cinderela; cinema; Guimarães Rosa.

Análise global de sistemas quadráticos e cúbicos com duas circunferências não-concêntricas invariantes

Pós-graduação em Matematica Aplicada e Computacional - FCT

Transformações de Lorentz e seus invariantes

In this paper, we will show the types of Lorentz transformations, from the most described in books, special Lorentz transformation that relates two inertial systems whose relative velocities are directed along an axis of the respective bases systems. However, we will see a peculiarity that goes unnoticed in this transformation, although they have reported in many books a parallel between the transformation inertial systems, due to the fact that the speed is parallel to an axis, it is actually a semi-parallel processing. The next transformation that we will see is one in which a system moves with a relative speed that has arbitrary direction with respect to a given system, we will show that this transformation may be appointed as non-rotational Lorentz transformation. Before obtain, the later type of transformation, the rotational Lorentz transformation, which is the interface between Special Relativity and General Relativity, we will describe the systems to be rotated, not just inertial systems, show what the characteristics are that define the non-rotational and rotational transformations. The in last topic of this chapter we will also show how the idea of Thoma’s theorythat uses this transformation to create what he defines as the proper coordinate axes of the particleused to obtain the factor 1/2 electron spin. In the last chapter we show how the Lorentz invariants are obtained, quantities measures that are also in different Lorentz reference, with the focus on mass that has erroneously been described in many books, that varies according to the agreement reference system

Existência de medidas invariantes em transformações contínuas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)