The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

Displaying 81 – 100 of 283

Showing per page

Étude de quelques propriétés des produits de Riesz

Jacques Peyrière (1975)

Annales de l'institut Fourier

On étudie les mesures définies sur T = R / 2 π Z par les produits j 0 ( 1 + Re ( a j e i λ j x ) ) , ( | a j | 1 , λ j entier, λ j + 1 / λ j 3 ) . Étant données deux telles mesures on donne des conditions assurant soit qu’elles sont étrangères, soit que l’une est absolument continue par rapport à l’autre. On donne une minoration de la dimension de Hausdorff des boréliens qui portent une telle mesure. On montre que certaines séries convergent presque partout par rapport à ces mesures. On en déduit, par exemple, que les ensembles x [ 0 , 2 π ] ; lim n + n - a j = 1 n e i λ j x = z , ( 1 2 < α < 1 , z C ) ont 1 pour dimension de Hausdorff. On étend...

Existence of large ε-Kronecker and FZI₀(U) sets in discrete abelian groups

Colin C. Graham, Kathryn E. Hare (2012)

Colloquium Mathematicae

Let G be a compact abelian group with dual group Γ and let ε > 0. A set E ⊂ Γ is a “weak ε-Kronecker set” if for every φ:E → there exists x in the dual of Γ such that |φ(γ)- γ(x)| ≤ ε for all γ ∈ E. When ε < √2, every bounded function on E is known to be the restriction of a Fourier-Stieltjes transform of a discrete measure. (Such sets are called I₀.) We show that for every infinite set E there exists a weak 1-Kronecker subset F, of the same cardinality as E, provided there are not “too many”...

Currently displaying 81 – 100 of 283