Buscar
Mostrando ítems 1-10 de 1249
Stable solutions of equations with a quadratic gradient term
(Texas State University. Department of Mathematics, 2016-09)
We consider positive solutions to a non-variational family of equations of the form−∆u − b(x)|∇u| 2 = λg(u) in Ω,where λ ≥ 0, b(x) is a given function, g is an increasing nonlinearity with g(0) > 0 and Ω ∈ R n isa bounded ...
Equações do 2° grau em variáveis complexas
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Matemática em Rede NacionalUTFPR, 2018-12-07)
In this work a methodology is presented to work on quadratic equations involving complex variables. Firstly, a history of the second-degree equations and complex numbers is presented. Following the formalism involving the ...
Bound states of the Dirac equation for a class of effective quadratic plus inversely quadratic potentials
(Elsevier B.V., 2004-05-01)
The Dirac equation is exactly solved for a pseudoscalar linear plus Coulomb-like potential in a two-dimensional world. This sort of potential gives rise to an effective quadratic plus inversely quadratic potential in a ...
Bound states of the Dirac equation for a class of effective quadratic plus inversely quadratic potentials
(Elsevier B.V., 2004-05-01)
The Dirac equation is exactly solved for a pseudoscalar linear plus Coulomb-like potential in a two-dimensional world. This sort of potential gives rise to an effective quadratic plus inversely quadratic potential in a ...
Equações e Funções Quadráticas: do surgimento aos dias atuais
(Universidade Federal do Rio Grande do NorteBrasilUFRNLicenciatura em Matemática, 2019)
Phase portraits of abel quadratic differential systems of second kind with symmetries
(Dynamical Systems An International Journal, 2020)
Phase portraits of abel quadratic differential systems of second kind with symmetries
(Dynamical Systems An International Journal, 2020)