Differential Equations. Proc. conf. Sao Paolo, 1981

Reduction methods via minimax....Pages 1-20
On multiple solutions of nonlinear elliptic equations with odd nonlinearities....Pages 21-33
Positive solutions of semilinear elliptic problems....Pages 34-87
A regularity theorem for inverse bounded and accretive operators in abstract Hilbert space....Pages 88-96
How to remember the Sobolev inequalities....Pages 97-109
The adjoint equation of a linear Volterra Stieltjes-integral equation with a linear constraint....Pages 110-125
On a fixed point index method for the analysis of the asymptotic behavior and boundary value problems of process and semidynamical systems....Pages 126-144
Introduction to bifurcation theory....Pages 145-202
Sobre estabilidad topologica....Pages 203-211
Solvability of operator equations involving nonlinear perturbations of Fredholm mappings of nonnegative index and applications....Pages 212-228
Some remarks on a wave equation with a nonlocal interaction....Pages 229-236
The mountain pass theorem: Theme and variations....Pages 237-271
Optimal spline solutions of systems of ordinary differential equations....Pages 272-283
Structurally stable second order differential equations....Pages 284-301