Dergiler / Turkish Journal of Mathematics / 2014 / Cilt: 38 - Sayı: 1

Kernel operators on the upper half-space: boundedness and compactness criteria

Sayfa
119–135
DOI
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Özet

We establish necessary and sufficient conditions on a weight v governing the trace inequality |\hat{K}f|Lqv(\hat{E}) \leq C|f|Lp(E), where E is a cone on a homogeneous group, \hat{E}: = E \times R+ and \hat{K} is a positive kernel operator defined on \hat{E}. Compactness criteria for this operator are also established.

Abstract

We establish necessary and sufficient conditions on a weight v governing the trace inequality |\hat{K}f|Lqv(\hat{E}) \leq C|f|Lp(E), where E is a cone on a homogeneous group, \hat{E}: = E \times R+ and \hat{K} is a positive kernel operator defined on \hat{E}. Compactness criteria for this operator are also established.

Anahtar kelimeler: Operators with positive kernels, upper half-space, potentials, homogeneous groups, trace inequality, boundedness, compactness, weights