On positive solutions of equations with two middle terms
On projective equivalence of univariate polynomial subspaces.
On properties of nonlinear second-order systems under nonlinear impulse perturbations.
On quasimonotone increasing systems of ordinary differential equations.
On rectifiable oscillation of Euler type second order linear differential equations.
On reducibility of linear quasiperiodic systems with bounded solutions.
On relation between stability and correctness of linear systems of generalized ordinary differential equations.
On relations among dispersions of an oscillatory differential equation
On Riccati's Equation and Its Transformations and Some Definite Integrals which satisfy them [Book]
On second order boundary value problems for functional differential inclusions in Banach spaces
We investigate the existence of solutions on a compact interval to second order boundary value problems for a class of functional differential inclusions in Banach spaces. We rely on a fixed point theorem for condensing maps due to Martelli.
On second order differential inclusions with periodic boundary conditions.
On second-order multivalued impulsive functional differential inclusions in Banach spaces.
On Semicontinuity in Impulsive Dynamical Systems
In the important paper on impulsive systems [K1] several notions are introduced and several properties of these systems are shown. In particular, the function ϕ which describes "the time of reaching impulse points" is considered; this function has many important applications. In [K1] the continuity of this function is investigated. However, contrary to the theorem stated there, the function ϕ need not be continuous under the assumptions given in the theorem. Suitable examples are shown in this paper....
On semilinear evolution equations in Banach spaces.
On simulations of the classical harmonic oscillator equation by difference equations.
On singular boundary value problems for two-dimensional differential systems
On singular functional differential inequalities.
On singular solutions of linear functional differential equations with negative coefficients.
On singular solutions of third order differential equations
On solutions of differential equations with ``common zero'' at infinity
The zeros of the solution of the differential equation are investigated when , and has some monotonicity properties as . The notion is introduced also for real, too. We are particularly interested in solutions which are “close" to the functions , when is large. We derive a formula for and apply the result to Bessel differential equation, where we introduce new pair of linearly independent solutions replacing the usual pair , . We show the concavity of for and also...