Results 81 to 90 of about 76,879 (276)

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

On some properties of the asymptotic Samuel function

open access: yesMathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.
Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
wiley   +1 more source

Idealização de um sistema educacional relacionando a geometria com o metodo ludico de aprendizagem [PDF]

open access: yes, 1998
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Programa de Pos-Graduação em Engenharia de Produção e SistemasO presente trabalho consiste na elaboração de um sistema multimídia que objetiva o ensino da Geometria.
Wanderlinde, Josiane
core  

Commuting Conditions of the k-th Cho operator with the structure Jacobi operator of real hypersurfaces in complex space forms

open access: yesOpen Mathematics, 2015
In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina   +1 more
doaj   +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

Construindo o círculo na Geometria do taxi: uma proposta de insubordinação criativa

open access: yes, 2020
A geometria é um ramo da Matemática cujos conceitos trabalham as formas, tamanho e posição de figuras relacionadas aos espaços, apresentando tipos diferentes.
Raimundo Nonato Barbosa Cavalcante   +1 more
semanticscholar   +1 more source

On totally umbilical and minimal surfaces of the Lorentzian Heisenberg groups

open access: yesMathematische Nachrichten, Volume 298, Issue 6, Page 1922-1942, June 2025.
Abstract This paper has manifold purposes. We first introduce a description of the Gauss map for submanifolds (both spacelike and timelike) of a Lorentzian ambient space and relate the conformality of the Gauss map of a surface to total umbilicity and minimality.
Giovanni Calvaruso   +2 more
wiley   +1 more source

Uma história de paixão: Estela Kaufman Fainguelernt e o ensino da Geometria [PDF]

open access: yes, 2012
SALVADOR, Marcelo Ferreira Martins. Uma história de paixão: Estela Kaufman Fainguelernt e o ensino de geometria, 2012. xiv, 71f.; il.; 29,7cm. Dissertação (Mestrado Profissional em Educação Matemática) – Universidade Severino Sombra, Vassouras, 2012.A ...
Salvador, Marcelo Ferreira Martins
core  

A Geometria Elementar e Intuitiva de Gabriel Prestes

open access: yes, 2020
O presente estudo tem a intencao de compreender como Gabriel Prestes, considerado um expert (Hofstetter et al, 2017) da educacao, por ocupar lugar de destaque na direcao da Escola Normal de Sao Paulo, propoe o ensino de uma geometria escolar.
M. A. D. Silva
semanticscholar   +1 more source

Mechanical Hamiltonization of Unreduced ϕ$\phi$‐Simple Chaplygin Systems

open access: yesStudies in Applied Mathematics, Volume 154, Issue 5, May 2025.
ABSTRACT In this paper, we prove that the trajectories of unreduced ϕ$\phi$‐simple Chaplygin kinetic systems are reparameterizations of horizontal geodesics with respect to a modified Riemannian metric. Furthermore, our proof is constructive and these Riemannian metrics, which are not unique, are obtained explicitly in interesting examples.
Alexandre Anahory Simoes   +2 more
wiley   +1 more source

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