Results 81 to 90 of about 230,575 (239)

Umiejętności geometryczne trzecioklasistów w świetle wyników badań

open access: yesProblemy Wczesnej Edukacji, 2018
In the article, it was sought to determine the level of third-graders’ geometry skills on the basis of the available test results of OBUT, K3 and Omnibus.
Monika Czajkowska   +1 more
doaj   +1 more source

Introdução ao plano hiperbólico com o Geogebra [PDF]

open access: yes, 2015
A Geometria Hiperbólica é uma das geometrias em que o famoso Postulado das Paralelas da Geometria Euclidiana não se verifica. Na geometria hiperbólica plana, por um ponto exterior a uma reta podem passar pelo menos duas paralelas à reta dada.
Maia, Cláudia, Vandembroucq, Lucile
core  

Hegel's Minor and Major Geographies: Space, Consciousness, and Change

open access: yesAntipode, Volume 56, Issue 4, Page 1357-1377, July 2024.
Abstract It is still largely ignored that Hegelian dialect can be of great assistance to comprehend the intricacies of the production, experience, and contestation of space. Hegelian philosophy can significantly help to enrich geographical scholarship, although Hegel‐the‐geographer is yet to be discovered and properly recognised.
Antonio A. R. Ioris
wiley   +1 more source

An elementary proof of MinVol(Rn) = 0 for n > 3

open access: yesAnais da Academia Brasileira de Ciências, 2008
In this paper, we give an elementary proof of the result that the minimal volumes of R³ and R4 are zero. The approach is to construct a sequence of explicit complete metrics on them such that the sectional curvatures are bounded in absolute value by 1 ...
Jiaqiang Mei, Hongyu Wang, Haifeng Xu
doaj   +1 more source

Abaixo Euclides e acima quem? Uma análise do ensino de geometria nas teses e dissertações sobre o movimento da matemática moderna no Brasil [PDF]

open access: yes, 2006
Disponível em: http://www.revistas2.uepg.br/index.php/praxiseducativa/article/view/271Este artigo tem como objetivo discutir propostas sobre o ensino de Geometria defendidas pelo Movimento da Matemática Moderna (MMM), a partir da análise de teses e ...
Duarte, Aparecida Rodrigues Silva   +1 more
core  

Kirillov structures and reduction of Hamiltonian systems by scaling and standard symmetries

open access: yesStudies in Applied Mathematics, Volume 153, Issue 1, July 2024.
Abstract In this paper, we discuss the reduction of symplectic Hamiltonian systems by scaling and standard symmetries which commute. We prove that such a reduction process produces a so‐called Kirillov Hamiltonian system. Moreover, we show that if we reduce first by the scaling symmetries and then by the standard ones or in the opposite order, we ...
A. Bravetti   +3 more
wiley   +1 more source

Caminhos e percursos da Geometria Analítica: estudo histórico e epistemológico [PDF]

open access: yes, 2013
A Geometria Analítica é parte integrante dos conteúdos a serem trabalhados na Educação Básica. Além disso, os conceitos trabalhados na Educação Básica são aprofundados nos componentes curriculares dos cursos de graduação das ciências exatas tais como ...
Castro, Adriana
core  

Multifactor characterization of space weathering among siliceous asteroids. I: Grain size effects

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 6, Page 1353-1384, June 2024.
Abstract Spacecraft missions to asteroids have revealed surfaces that have variations in albedo and spectral properties. Such variations are also detected across the asteroid population with ground‐based observations, and are controlled by the physical characteristics of the regolith and by processes such as space weathering.
Eric M. MacLennan   +5 more
wiley   +1 more source

Recent results on linear systems on generic K3 surfaces [PDF]

open access: yes, 2004
In this note we relate about the problem of evaluate the dimension of linear systems through fat points defined on generic $K3$ surfaces.Comment: 4 pages ...
De Volder, Cindy, Laface, Antonio
core   +4 more sources

La falta de enseñanza de la geometría en el nivel medio y su repercusión en el nivel universitario: análisis del proceso de nivelación de la Universidad Técnica de Manabí.

open access: yesRehuso, 2019
  La geometría es una rama multifacética de las matemáticas. Su riqueza, producto de la estrecha relación con otros dominios matemáticos, las ciencias naturales y sociales y la vida cotidiana, abarca varias dimensiones. En este contexto, el propósito de
C. Andrade   +2 more
semanticscholar   +1 more source

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