On a Class of Pseudodifferential Operators with Double Characteristics.
On a Class of Retarded Partial Differential Equations.
On a Class of Strongly Nonlinear Elliptic Varionational Inequalities.
On a Class of Time Inhomogeneous Nonsingular Flows and Schrödinger Operators.
On a class of Toeplitz + Hankel operators.
On a class of unsolvable operators
On a class of weighted function spaces and related pseudodifferential operators
On a class of weighted Sobolev spaces
On A Common Fixed Point Theorem Of A Greguš Type
On a completion of prehilbertian spaces.
On a -parameter ergodic theorem for continuous semigroups of operators satisfying norm conditions
A continuous multiparameter version of Chacon's vector valued ergodic theorem is proved.
On a decomposition for pairs of commuting contractions
A new decomposition of a pair of commuting, but not necessarily doubly commuting contractions is proposed. In the case of power partial isometries a more detailed decomposition is given.
On a Five-Diagonal Jacobi Matrices and Orthogonal Polynomials on Rays in the Complex Plane
∗ Partially supported by Grant MM-428/94 of MESC.Systems of orthogonal polynomials on the real line play an important role in the theory of special functions [1]. They find applications in numerous problems of mathematical physics and classical analysis. It is known, that classical polynomials have a number of properties, which uniquely define them.
On a fixed point theorem and applications to a two point boundary value problem
On a fixed point theorem for weakly sequentially continuous mapping
Let E be a metrizable locally convex topological vector space x ∈ E, and let D be a closed convex subset of E such that x ∈ D. In this paper we prove that the weakly sequentially continuous mapping F: D ∪ D which satisfies V̅ = c̅o̅n̅v̅({x} ∪ F(V))⇒ V is relatively weakly compact, has a fixed point. Employing the above results we prove the existence theorem for the Cauchy problem x'(t) = f(t,x(t)), x(0) = x₀. As compared with the previous...
On a fixed point theorem of Greguš.
On a fixed point theorem of Krasnoselskii and triangle contractive operators
On a fixed point theorem of Krasnosel'skii type and application to integral equations.
On a fixed point theorem of Krasnoselskii-Schaefer type.
On a fixed point theorem of Pathak.