In this paper we show that the unit ball of an infinite dimensional function algebra has no s..

We use A. Weils criterion to prove that all finite dimensional unitary representations of a d..

Given a manifold M of dimension at least 4 whose universal covering is homeomorphic to a sphe..

A k-rule is a sequence $\vec{A}$ = ((Alt;LAT ((A $_{n}$ , B $_{n}$ ): n ${\Bbb N}$ )..

A surface in ${\bf R}^{3}$ has Hamiltonian stationary normal bundle if and only if it is ei..

Let p(z) be a complex polynomial of degree n having k zeros in a disk D. We deal with the pro..

We consider composition operators on Hardy spaces of a half-plane. We mainly study boundednes..

We establish the following result. Theorem. Let $\alpha $ : G $\rightarrow {\cal L}$ (X) ..

We study the double trigonometric series whose coefficients c $_{jk}$ are such that $\sum_..

We describe the dynamics of a class of second order periodic differential equations whose mai..