Eventual Ideal Properties of the Riemann-Liouville Analytic Semigroup

Autor: Alam, I, Chalendar, I., Chami, F. El, Fricain, E., Lefèvre, P.

In this paper, we revisit the Riemann--Liouville analytic semigroup. In particular, we completely characterize the membership to the Schatten class $S^r$ on $L^2(0,1)$, as well as the membership to the class of nuclear operators on $L^p(0,1)$, $p\geq

Externí odkaz: http://arxiv.org/abs/2404.19540

A short note on the Feichtinger Conjecture

Autor: Chalendar, I., Fricain, E., Timotin, D.

We discuss the equivalence of the Feichtinger Conjecture with a weaker variant and we show its connection with a conjecture of Agler--McCarthy--Seip concerning complete Nevanlinna--Pick reproducing kernel spaces. Some new examples of sequences of nor

Externí odkaz: http://arxiv.org/abs/1106.3408

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Constructive approximation in de Branges-Rovnyak spaces

Autor: El-Fallah, O, Fricain, E, Kellay, Karim, Mashreghi, J, Ransford, T.

Publikováno v: Constructive Approximation
Constructive Approximation, Springer Verlag, 2016, 44 (2), pp.269-281
Constructive Approximation, 2016, 44 (2), pp.269-281

International audience; In most classical holomorphic function spaces on the unit disk, a function $f$ can be approximated in the norm of the space by its dilates $f_r(z):=f(rz)~(r < 1)$.We show that this is \emph{not} the case for the de Branges--Ro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2234394e964a1755acd98aeeea4762f