Fredholm property for a parameter dependent second order operator differential equation.
Fredholm-Stieltjes integral equations with linear constraints: duality theory and Green's function
Fučík spectra for vector equations.
Functional compression-expansion fixed point theorem.
Functions uniformly quiet at zero and existence results for one-parameter boundary value problems
We introduce the notion of uniform quietness at zero for a real-valued function and we study one-parameter nonlocal boundary value problems for second order differential equations involving such functions. By using the Krasnosel'skiĭ fixed point theorem in a cone, we give values of the parameter for which the problems have at least two positive solutions.
Funktionalgleichungen in reellen Vektorräumen und verallgemeinerte Cauchy-Riemannsche Differentialgleichungen, speziell die Weylsche Gleichung des Neutrinos.
Funktionalgleichungen in reellen Verktorräumen und verallgemeinerte Cauchy-Riemannsche Differentialgleichungen, speziell die Weylsche Gleichung des Neutrinos. (Short Communication).
Further remark on a theorem by E. M. Landesman and A. C. Lazer
Further results for some third order differential systems with nonlinear dissipation
We formulate nonuniform nonresonance criteria for certain third order differential systems of the form , which further improves upon our recent results in [12], given under sharp nonresonance considerations. The work also provides extensions and generalisations to the results of Ezeilo and Omari [5], and Minhós [9] from the scalar to the vector situations.
Fuzzy solutions for boundary value problems with integral boundary conditions.