Galerkin approximations in several parameter bifurcation problems
J. C. Alexander, Patrick M. Fitzpatrick · Mathematical Proceedings of the Cambridge Philosophical Society · 1980
The purpose of this paper is to prove a theorem giving conditions yielding global bifurcation of the solutions of a family of parameterized nonlinear equations, the domain and the range of which lie in Banach spaces, where the parameter is allowed to be a vector in , k a positive integer. The basic contribution is that the parameter is vector valued and that the nonlinearities allowed are very general; however, even for scalar parameters, our results extend those of previous authors.