On fixed point theorems for absolute retracts
On Fixed Point Theorems In Banach Spaces
On Fixed Point Theorems of Maia Type
On fixed point theorems of mixed monotone operators.
On fixed points of pseudocontractive mappings.
On fixed points of set-valued directional contractions.
On flatness and some ergodic properties of Banach spaces
On Fourier coefficients and factorable operators.
On four-point boundary value problems for differential inclusions and differential equations with and without multivalued moving constraints
We deal with the problems of four boundary points conditions for both differential inclusions and differential equations with and without moving constraints. Using a very recent result we prove existence of generalized solutions for some differential inclusions and some differential equations with moving constraints. The results obtained improve the recent results obtained by Papageorgiou and Ibrahim-Gomaa. Also by means of a rather different approach based on an existence theorem due to O. N. Ricceri...
On fourth-order boundary-value problems
We show the existence of solutions to a boundary-value problem for fourth-order differential inclusions in a Banach space, under Lipschitz’s contractive conditions, Carathéodory conditions and lower semicontinuity conditions.
On Fredholm alternative for certain quasilinear boundary value problems
On Function Spaces of Variable Order of Differentiation.
On functional inequalities originating from module Jordan left derivations.
On fundamental systems for differential equations of Kamke type.
On fuzzy Volterra integral equations with deviating arguments.
On general Lipschitzian kernels.
On Generalised Putnam-Fuglede Theorems.
On generalized a-Browder's theorem
We characterize the bounded linear operators T satisfying generalized a-Browder's theorem, or generalized a-Weyl's theorem, by means of localized SVEP, as well as by means of the quasi-nilpotent part H₀(λI - T) as λ belongs to certain sets of ℂ. In the last part we give a general framework in which generalized a-Weyl's theorem follows for several classes of operators.
On generalized canonical commutation relations
On generalized derivations in Banach algebras
We study generalized derivations G defined on a complex Banach algebra A such that the spectrum σ(Gx) is finite for all x ∈ A. In particular, we show that if A is unital and semisimple, then G is inner and implemented by elements of the socle of A.