Necessary And Sufficient Conditions For Existence Of Solutions To Equations With Noninvertible Linear Part.
Neumann boundary value problems across resonance
We obtain an existence-uniqueness result for a second order Neumann boundary value problem including cases where the nonlinearity possibly crosses several points of resonance. Optimal and Schauder fixed points methods are used to prove this kind of results.
Nichtlineare analytische Eigenwertprobleme im Banachraum.
Nichtlineare Eigenwertprobleme mit zwei Parametern.
Nichtlineare Störung der isolierten Eigenwerte selbstadjungierter Operatoren.
Nonautonomous functional equations and nonlinear evolution operators
Non-convex perturbations of evolution equations with -dissipative operators in Banach spaces
Non-degenerate implicit evolution inclusions.
Nonlinear analysis. New arguments and results.
Si presentano condizioni sufficienti in forma astratta per l'esistenza di soluzioni di equazioni operazionali non lineari la cui parte lineare non è autoaggiunta.
Nonlinear analysis. New arguments and results. II.
We continue here the discussion in part I, and we state and prove further sufficient conditions for the existence of a solution to nonselfadjoint problems.
Nonlinear boundary value problems for second order differential inclusions
In this paper we study two boundary value problems for second order strongly nonlinear differential inclusions involving a maximal monotone term. The first is a vector problem with Dirichlet boundary conditions and a nonlinear differential operator of the form . In this problem the maximal monotone term is required to be defined everywhere in the state space . The second problem is a scalar problem with periodic boundary conditions and a differential operator of the form . In this case the maximal...
Nonlinear eigenvalue problems
Non-linear eigenvalue problems and bifurcations for differentiable multivalued maps
Nonlinear Eigenvalue Problems with Monotonically Compact Operators. (Short Communication).
Nonlinear eigenvalue problems with monotonically compact operators.
Nonlinear elliptic problems with jumping nonlinearities near the first eigenvalue
In this paper existence and multiplicity of solutions of the elliptic problem in on , are discussed provided the parameters and are close to the first eigenvalue . The sufficient conditions...
Nonlinear equations in Hilbert space.
Nonlinear equations of Urysohn's type in a Banach space
Nonlinear equations with linear part at resonance: Variational approach
Nonlinear equations with noninvertible linear part