1989-1990/50/3

On transformations of self-adjoint linear differential systems and their reciprocals

On the random version of Ważewski theorem

On positive solutions of equations with two middle terms

Boundary value problems for evolution inclusions

On the existence and regularity of solutions of linear equations in spaces ${\displaystyle H_k\left(G\right)}$

On the solvability of singular BVPs for second-order ordinary differential equations

Lifting uniformly continuous maps with values in nuclear Fréchet spaces