On perturbations of deviations of periodic differential-difference equations in Banach spaces
On perturbations of differentiate semigroups.
On Perturbations of Linear m-Accetive Operators on Reflexive Banach Spaces.
On pointwise ergodic theorems for positive operators
On polynomial equations in Banach space, perturbation techniques and applications.
On Polynomials in Several Hilbert Space Operators.
On positive eigenvectors of a linear eigenvalue problem
On Positive L? Solutions of a Class of Elliptic Systems.
On positive operator-valued continuous maps
In the paper the geometric properties of the positive cone and positive part of the unit ball of the space of operator-valued continuous space are discussed. In particular we show that
On positive solutions for a nonlinear boundary value problem with impulse
In this paper we study nonlinear second order differential equations subject to separated linear boundary conditions and to linear impulse conditions. Sign properties of an associated Green’s function are investigated and existence results for positive solutions of the nonlinear boundary value problem with impulse are established. Upper and lower bounds for positive solutions are also given.
On positive solutions of semilinear elliptic problems
On powers of -hyponormal and log-hyponormal operators.
On precompact multiplication operators on weighted function spaces.
On Pre-parareflexive Operator Algebras
On pre-reflexive algebras and pre-reflexive operators
On problems concerning extension of linear operations on linear spaces
On problems concerning uniqueness of the extension of linear operations on linear spaces
On product formulas for exponential functions.
On product of projections
An operator with infinite dimensional kernel is positive iff it is a positive scalar times a certain product of three projections.
On products of non-commuting sectorial operators