On extending continuous functions on dense subsemigroups.
On extension of scalar valued positive definite functions on ordered groups.
On Fourier Stieltjes Transforms of Discrete measures.
On Fourier-Stieltjes transforms integer-valued on a given subset.
On fractional differentiation and integration on spaces of homogeneous type.
In this paper we define derivatives of fractional order on spaces of homogeneous type by generalizing a classical formula for the fractional powers of the Laplacean [S1], [S2], [SZ] and introducing suitable quasidistances related to an approximation of the identity. We define integration of fractional order as in [GV] but using quasidistances related to the approximation of the identity mentioned before.We show that these operators act on Lipschitz spaces as in the classical cases. We prove that...
On functional equations associated with characters of unitary representations of groups.
On functional polynomials spanned by characters of unitary representations. (Summary).
On functions with scattered spectra on lea groups
On generalized Beurling’s theorem and symmetry of -group algebras
On generalized invariant means and separation theorems.
On group algebras of nilpotent Lie groups
On group topologies and idempotents in weak almost periodic compactifications.
On Haar measure of .
On Haar Measure on Sl(n,r)
On Haar null sets
We prove that in Polish, abelian, non-locally-compact groups the family of Haar null sets of Christensen does not fulfil the countable chain condition, that is, there exists an uncountable family of pairwise disjoint universally measurable sets which are not Haar null. (Dougherty, answering an old question of Christensen, showed earlier that this was the case for some Polish, abelian, non-locally-compact groups.) Thus we obtain the following characterization of locally compact, abelian groups: Let...
On harmonic separation
On Hartman almost periodic functions
We consider multi-dimensional Hartman almost periodic functions and sequences, defined with respect to different averaging sequences of subsets in or . We consider the behavior of their Fourier-Bohr coefficients and their spectrum, depending on the particular averaging sequence, and we demonstrate this dependence by several examples. Extensions to compactly generated, locally compact, abelian groups are considered. We define generalized Marcinkiewicz spaces based upon arbitrary measure spaces...
On heat kernels on Lie groups.
On Hilbert sets and -spaces with no subspace isomorphic to
On inclusions between Arbault sets