2007 | OriginalPaper | Buchkapitel
On the Kernel of Some One-dimensional Singular Integral Operators with Shift
verfasst von : Viktor G. Kravchenko, Rui C. Marreiros
Erschienen in: The Extended Field of Operator Theory
Verlag: Birkhäuser Basel
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
An estimate for the dimension of the kernel of the singular integral operator with shift
$$ \left( {I + \sum\limits_{j = 1}^n {a_j (t)U^j } } \right)P_ + + P_ - :L_2 (\mathbb{R}) \to L_2 (\mathbb{R}) $$
is obtained, where
P
±
are the Cauchy projectors, (
U ψ
)(
t
) =
ψ
(
t
+
h
),
h
∈ ℝ
+
, is the shift operator and
a
j
(
t
) are continuous functions on the one point compactification of ℝ. The roots of the polynomial
$$ 1 + \sum\limits_{j = 1}^n {a_j (\infty )\eta ^j } $$
are assumed to belong all simultaneously either to the interior of the unit circle or to its exterior.