Some properties of groups without the property P1.
Some remarks on density points and the uniqueness property for invariant extensions of the Lebesgue measure
Some Remarks on Invariant Means.
Some Remarks on L1(G).
Some remarks on quasi-Cohen sets
We are interested in Banach space geometry characterizations of quasi-Cohen sets. For example, it turns out that they are exactly the subsets E of the dual of an abelian compact group G such that the canonical injection is a 2-summing operator. This easily yields an extension of a result due to S. Kwapień and A. Pełczyński. We also investigate some properties of translation invariant quotients of L¹ which are isomorphic to subspaces of L¹.
Some remarks on sets of uniform convergence
Some remarks on the random walk on finite groups
Some remarks on the spectra of unitary dilations
Some Remarks on Transmutation, Scattering Theory, and Special Functions.
Some restriction theorems for the Heisenberg group
Some results about Beurling algebras with applications to operator theory
We prove that certain maximal ideals in Beurling algebras on the unit disc have approximate identities, and show the existence of functions with certain properties in these maximal ideals. We then use these results to prove that if T is a bounded operator on a Banach space X satisfying as n → ∞ for some β ≥ 0, then diverges for every x ∈ X such that .
Some Results about the Spectrum of Commutative Banach Algebras under the Weak Topology and Applications.
Some results in spectral analysis and synthesis at infinity.
Some results on submodules of
Some results on eigenfunctions on symmetric spaces and eigenspace representations.
Some results on Kronecker, Dirichlet and Helson sets
We construct the following: a perfect non Dirichlet set every proper closed subset of which is Kronecker, A weak Kronecker set which is not an set; an independent countable Dirichlet set which is not Kronecker; a collection of -disjoint Kronecker sets whose union is independent but Helson ; A countable collection of disjoint Kronecker sets whose union is closed and independent but not Helson: a perfect independent Dirichlet set which is not Helson.
Some Results on the Fourier-Stieltjes Algebra of a Locally Compact Group.
Some results on the unramified principal series of p-adic groups.
Some singular measures on the circle which improve spaces
Some special W-almost periodic sets on the integers.