The simultaneous nonlinear inequalities problem and applications.
The solution of a Fučík's conjecture
The solvability of a class of general nonlinear implicit variational inequalities based on perturbed three-step iterative processes with errors.
The solvability of a new system of nonlinear variational-like inclusions.
The topological degree and fixed points of DC-mappings
The topological degree method for equations of the Navier-Stokes type.
The use of Cerami sequences in critical point theory.
Théorèmes de Nikišin
Theorems of existence and multiplicity for nonlinear elliptic problems with noninvertible linear part
Three methods for the study of semilinear equations at resonance
Three methods for the study of the solvability of semilinear equations with noninvertible linear parts are compared: the alternative method, the continuation method of Mawhin and a new perturbation method [22]-[27]. Some extension of the last method and applications to differential equations in Banach spaces are presented.
Three nodal solutions of singularly perturbed elliptic equations on domains without topology
Topological and approximation methods of degree theory of set-valued maps [Book]
Topological degree and application to a parabolic variational inequality problem.
Topological degree for ultimately compact multivalued vector fields in topological vector spaces
Towards viscosity approximations of hierarchical fixed-point problems.
Transformationseigenschaften endlicher Ketten und allgemeine Verzweigungsaussagen.
Transizioni di fase ed isteresi
L'attività di ricerca di chi scrive si è finora indirizzata principalmente verso l'esame dei modelli di transizione di fase, dei modelli di isteresi, e delle relative equazioni non lineari alle derivate parziali. Qui si illustrano brevemente tali problematiche, indicando alcuni degli elementi che le collegano tra di loro. Il lavoro è organizzato come segue. I paragrafi 1, 2, 3 vertono sulle transizioni di fase: si introducono le formulazioni forte e debole del classico modello di Stefan, e si illustrano...
Two convergence results for continuous descent methods.
Two examples of the operators with jumping nonlinearities
Two new iterative methods for a countable family of nonexpansive mappings in Hilbert spaces.