Results 71 to 80 of about 704,679 (196)

Weak Solutions for a Class of Nonlocal Singular Problems Over the Nehari Manifold

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we consider a nonlocal model of dilatant non‐Newtonian fluid with a Dirichlet boundary condition. By using the Nehari manifold and fibering map methods, we obtain the existence of at least two weak solutions, with sign information.
Zhenfeng Zhang, Calogero Vetro, Tianqing An   +2 more
wiley   +1 more source

Sard's approximation processes and oblique projections [PDF]

, 2009
Three problems arising in approximation theory are studied. These problems have already been studied by Arthur Sard. The main goal of this paper is to use geometrical compatibility theory to extend Sard's results and get characterizations of the sets of ...
Corach, Gustavo, Giribet, Juan Ignacio, Maestripieri, Alejandra Laura   +2 more
core   +2 more sources

Random Chemostats with Competition and Different Kinetics to Investigate the Growth of the Gut Microbiome

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate some chemostat models incorporating wall growth, competition, random fluctuations on the dilution rate, and different consumption functions (Monod and Haldane). We analyze the asymptotic behavior of the solutions of the corresponding random differential systems to establish conditions on the model parameters under which the ...
Javier López‐de‐la‐Cruz, Felipe Rivero, Carlos R. Takaessu Jr.   +2 more
wiley   +1 more source

A invenção da teoria das tranças

Revista Brasileira de História da Ciência
Este artigo trata da criação da teoria das tranças sob um ponto de vista histórico e parte da seguinte questão investigativa: como aconteceu a criação da teoria das tranças?
Juliana Roberta Theodoro de Lima, Ediel Azevedo Guerra   +1 more
doaj   +1 more source

MATEMÁTICA EM CONTEXTO E APLICAÇÕES: CONEXÕES ENTRE ARTE E MATEMÁTICA

Revista REAMEC, 2018
A Matemática e a Arte estão diretamente ligadas à vivência humana. O presente trabalho tem como objetivo verificar possíveis conexões entre Arte e Matemática presentes em livros didáticos do Ensino Médio utilizados por professores do Instituto Federal do
Adílio Jorge Sabino, Idemar Vizolli
doaj   +1 more source

On the boundedness of some nonlinear differential equation of second order [PDF]

, 2015
In this paper we study the boundedness of the solutions of some nonlinear dofferential equation using as a key tool the Second Lyapunov method, i.e. find sufficient conditions under which the solutions of this equation are bounded.
Guzmán, Paulo Matias, Lugo, Luciano Miguel, Napoles Valdes, Juan Eduardo   +2 more
core  

The unique continuation property for a nonlinear equation on trees [PDF]

, 2014
In this paper, we study the game p-Laplacian on a tree, that is, u(x) = α / 2 max y∈S(x) u(y) + min y∈S(x) u(y) + β m y∈S(x) u(y);here x is a vertex of the tree and S(x) is the set of successors of x. We study the family of the subsets of the tree that
del Pezzo, Leandro Martin, Mosquera, Carolina Alejandra, Rossi, Julio Daniel   +2 more
core   +2 more sources

Hölder Regularity of the Solutions of Fredholm Integral Equations on Upper Ahlfors Regular Sets

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We extend to the context of metric measured spaces, with a measure that satisfies upper Ahlfors growth conditions, the validity of (generalized) Hölder continuity results for the solution of a Fredholm integral equation of the second kind. Here we note that upper Ahlfors growth conditions include also cases of nondoubling measures.
Massimo Lanza de Cristoforis, Manuel Norman   +1 more
wiley   +1 more source

Spatially Resolved Monitoring of Drying of Hierarchical Porous Organic Networks [PDF]

, 2016
Evaporation kinetics of water confined in hierarchal polymeric porous media is studied by low field nuclear magnetic resonance (NMR). Systems synthesized with various degrees of cross-linker density render networks with similar pore sizes but different ...
Acosta, Rodolfo Hector, Gomez, Cesar Gerardo, Mattea, Carlos, Monti, Gustavo Alberto, Silletta, Emilia Victoria, Stapf, Siegfried, Strumia, Miriam Cristina, Velasco, Manuel Isaac   +7 more
core   +1 more source

Existence of Solution for Two Classes of Quasilinear Systems Defined on a Nonreflexive Orlicz–Sobolev Spaces

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper proves the existence of nontrivial solution for two classes of quasilinear systems of the type −ΔΦ1u=Fu(x,u,v)+λRu(x,u,v)inΩ−ΔΦ2v=−Fv(x,u,v)−λRv(x,u,v)inΩu=v=0on∂Ω$$ \left\{\begin{array}{l}\hfill -{\Delta}_{\Phi_1}u={F}_u\left(x,u,v\right)+\lambda {R}_u\left(x,u,v\right)\kern0.1832424242424242em \mathrm{in}\kern0.3em \Omega ...
Lucas da Silva, Marco Souto
wiley   +1 more source