979 resultados para Geometria - Fundamentos


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Construction techniques with ruler and the compasses, fundamental on Euclidean geometry, have been related to modern algebraic theories such as solving equations and extension of bodies from the works by Paolo Ruffini (1765-1822), Niels Henrik Abel (1802-1829) and Evariste Galois (1811-1832). This relation could provide an answer to some famous problems, from ancient Greece, such as doubling the cube, the trisection Angle, the Quadrature of the Circle and the construction of regular polygons, which remained unsolved for over two thousand years. Also important for our purposes are the notions of algebraic numbers, transcendental and the criteria for constructability, of those numbers. The objective of this study is to reconstruct relevant steps of geometric constructions with ruler (unmarked) and the compasses, from the elementary to the outcome buildings, in the nineteenth century, considering those mentioned problems.

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Algoritmos para reconhecimento de 3-variedades utilizam-se do conceito de superfície normal, sendo assim, pode-se então tratar problemas de teoria de 3-variedades como sendo de programação linear. Como exemplos tem-se o Algoritmo de reconhecimento da 3-esfera triangulável de Rubinstein-Thompson que é implementado na suíte de software Regina, como a decomposição soma conexa de 3-variedades. A completa classificação de 3-variedades pode ser realizada por meio de algoritmos, possuindo assim relevância para o Programa de Geometrização de Thurston para obtenção de resultados inicialmente utilizando topologia computacional. O objetivo do presente trabalho é discorrer sobre uma aplicação do software Regina. Obteve-se durante a elaboração do presente trabalho, o resultado entre a comparação da 3-esfera homológica de Poincaré com a 3-esfera, parte importante para o entendimento da Conjectura de Poincaré e do Programa de Geometrização.

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The goal of this work is to perform a historical approach of important results about maxima and minima, on Euclidean geometry, involving perimeters, areas and volumes. As a highlight, we can mention the Dido’s isoperimetric problem and the Papus’s problem about the wit of the bees. In this context, with a concern didactic, we tried to use, whenever possible, the geometry classical formulas to the calculus of areas. On the other hand, in the case of isoperimetric inequality the techniques of differential and integral calculus became more suitable for our purposes.

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Neste trabalho estudaremos algumas propriedades geom´etricas do fractal “Esponja de Menger”, que é um objeto matemático construído através de um processo recursivo infinito que o torna auto-semelhante. Além disso, a dimens˜ao de um fractal n˜ao é necessariamente um número inteiro, diferentemente do que ocorre com os objetos da Geometria Euclidiana. Mais ainda, a Esponja possui área infinita e volume nulo, fatos que demonstraremos ao longo deste texto.

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Taking for granted that the trajectory of the process of democratization of Brazilian school is in evidence and in a moment of no return, thinking about your model becomes necessary and urgent relevance. Presents some specific elements of historical course, facing circumstances and moments that established milestones in the construction of the school curriculum in Brazil and directed the mentality of the pedagogical. The thought is present democratizing steadily, but still, is so inconclusive in academic and theoretically fragile in the school routine. Along the way the great complexity of this issue begins to reveal, for some traits, their chances for overcoming an institutional model in a state of exhaustion.

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This article presents the theoretical and methodological unity between the historical-critical pedagogy and cultural-historical psychology. It highlights, in addition to the membership of both theories to historical-dialectical materialism, the basic premises that point toward the affirmation of school education as a condition of humanization of individuals, as well as the transmission of historically systematized knowledge as one of the requirements for the achieving this purpose. In this direction, we aim to demonstrate that the historical-critical pedagogy contains, in its innerness, a solid psychological foundation, consistently built by a cultural-historical conception of man, society and educative nature that guides the relationship between them through the human vital activity, that is, through the work. It is in the core of those fundamentals that the alliance between this pedagogical theory and cultural-historical psychology is evident.

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Research partly motivated by Lewis Carroll's Euclid and his modern rivals (1879) portuguese translation, this paper presents some hermeneutical remarks taken as necessary to understand the context in which such book was produced. The paper focuses particularly on education, in general, and on the teaching of mathematics and Geometry in victorian England.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Matemática - IBILCE

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Pós-graduação em Odontologia Restauradora - ICT

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This article examines philosophical and anthropological underpinnings of the Sich-Bewegen Theory, based on the phenomenological philosophy by Merleau-Ponty and social anthropology by Mauss and Geertz. It also considers implications for Physical Education Elementary and High School curricula aimed at forming emancipated, autonomous and critical individuals, taking the Physical Education Curriculum of the State of Sao Paulo as example. It concludes that the curriculum needs to imbricate into students'social life and take into account the challenges and issues from contemporary society.