Fatou-type theorems for general approximate identities
Författare
Summary, in English
For functions. f is an element of L-1 (R-n) we consider extensions to R-n x R+ given by convolving f with an approximate identity. Fora large class of approximate identities we obtain a Fatou-type theorem where the convergence regions are sometimes effectively larger than the non-tangential ones. We then study a more restricted class of approximate identities for which the convergence regions are shown to be optimal. Finally we will consider products of approximate identities. The results extend previous results by Sjogren [4], Ronning [2] and Brundin [1].
Avdelning/ar
Publiceringsår
2008
Språk
Engelska
Sidor
231-252
Publikation/Tidskrift/Serie
Mathematica Scandinavica
Volym
102
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
Matematisk Institut
Ämne
- Mathematics
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0025-5521