Results 41 to 50 of about 30,783 (142)
Good Real Perturbations of Simple Corank One Map Germs From R3$\mathbb {R}^3$ to R3$\mathbb {R}^3$
Mathematische Nachrichten, EarlyView.ABSTRACT The existence of good real perturbations of map germs is one of the most interesting open questions in singularity theory. In this paper, we investigate this question for all simple corank one map germs from R3$\mathbb {R}^3$ to R3$\mathbb {R}^3$, we give a complete description of those that admit a good real perturbation.
A. J. Miranda, M. J. Saia, T. O. Souza
wiley +1 more source
Uma investigação sobre o erro em Matemática: possibilidades para a aprendizagem matemática
Tangram, 2021 Este relato objetiva apresentar os resultados de uma investigação realizada durante a execução de um trabalho de conclusão de curso com o tema do erro em avaliações e práticas docentes em Matemática. Nesse sentido, os dados produzidos buscam mostrar como
Marco Aurélio Kistemann Jr. +1 more
doaj +1 more source
Kernel Bounds for Parabolic Operators Having First‐Order Degeneracy at the Boundary
Mathematische Nachrichten, EarlyView.ABSTRACT We study kernel estimates for parabolic problems governed by singular elliptic operators ∑i,j=1N+1qijDij+cDyy,cγ+1>0,γ=qN+1,N+1,$$\begin{equation*} \sum _{i,j=1}^{N+1}q_{ij}D_{ij}+c\frac{D_y}{y},\qquad \frac{c}{\gamma }+1>0, \quad \gamma =q_{N+1,N+1}, \end{equation*}$$in the half‐space R+N+1={(x,y):x∈RN,y>0}$\mathbb {R}^{N+1}_+=\lbrace (x,y ...
L. Negro, C. Spina
wiley +1 more source
Formación disciplinar matemática en la escuela normal
Ciencia, Docencia y TecnologíaSe presenta un estudio sobre la formación disciplinar relacionada con el área de matemática para los normalistas en Colombia, cuyo objetivo principal fue examinar si los conocimientos recibidos en dicha área le permiten al docente con el sólo título de ...
ALFONSO GÓMEZ MULETT
doaj +1 more source
O lúdico no ensino de topografia
Revista de Educação Popular, 2020 Objetiva-se com esta proposta de trabalho investigar as repercussões da utilização do lúdico como estratégia de ensino no aprendizado de Topografia para o Curso Técnico em Agropecuária com ênfase em Agroecologia do PRONERA no Território do Sertão do ...
Américo Garcia Freire Magalhães +3 more
doaj +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés +2 more
wiley +1 more source
Mathematical Methods in the Applied Sciences, Volume 48, Issue 6, Page 6912-6917, April 2025.ABSTRACT Nowadays, a substantial portion of investigations concerning the symmetry analysis of differential equations predominantly adhere to a framework comprising the following key procedures: (i) the derivation of symmetries, (ii) the determination of an optimal system, (iii) the utilization of these symmetries to construct invariants or ...
A. Paliathanasis +2 more
wiley +1 more source
Sundman‐Like Transformations and the NRT Nonlinear Schrödinger Equation
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We present a new generalization of the well‐known power‐type Sundman transformation, involving not only powers of the function but also of its derivative, along with its inverse. Our aim is to explore the use of such transformations in the derivation of solutions of ordinary differential equations and in the study of their properties.
P. R. Gordoa +3 more
wiley +1 more source
Solvability and Boundedness in Chemotaxis‐Consumption Models With Oppositely Acting Nonlocal Sources
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In this paper, we investigate a chemotaxis system featuring a class of external source terms that incorporate both local and nonlocal growth as well as dampening effects. The model describes the evolution of a cell density u$$ u $$, which migrates in response to a chemical signal v$$ v $$, within an impermeable habitat.
Rafael Díaz Fuentes +3 more
wiley +1 more source
Matemática comparada con otras disciplinas en el índice de citación Scimago
Papeles, 2017 Este artículo presenta la producción de la disciplina de la matemática en los cinco primeros Journals (revistas especializadas), en términos de temas, bajo el índice de Scimago (15 de abril de 20171); se clasifican los títulos y resúmenes sacados de la ...
Laura Buitrago Niño +1 more
doaj +1 more source