Nonlinear potentials and two weight trace inequalities for general dyadic and radial kernels
| dc.creator | Cascante, C. | |
| dc.creator | Ortega, J. M. | |
| dc.creator | Verbitsky, I. E. | |
| dc.date | 2003-09-17 | |
| dc.date.accessioned | 2026-07-07T05:01:13Z | |
| dc.date.available | 2026-07-07T05:01:13Z | |
| dc.description | We study trace inequalities of the type $$ \| T_k f\|_{L^q(dμ)}\leq C \|f\|_{L^p(dσ)}, \qquad f \in L^p(dσ), $$ in the ``upper triangle case'' $1 \leq q<p$ for integral operators $T_k$ with positive kernels, where $dσ$ and $dμ$ are positive Borel measures on $\R^n$. Our main tool is a generalization of Th. Wolff's inequality which gives two-sided estimates of the energy ${\mathcal E}_{k, σ} [μ]=\int_{\R^n} (T_k [μ])^{p'} d σ$ through the $L^1(dμ)$-norm of an appropriate nonlinear potential $W_{k, σ}[μ]$ associated with the kernel $k$ and measures $dμ$, $d σ$. We initially work with a dyadic integral operator with kernel $K_{\mathcal D}(x, y) = \sum_{Q\in{\mathcal D}} K(Q) χ_Q(x) χ_Q(y)$, where $\mathcal D=\{Q\}$ is the family of all dyadic cubes in $\R^n$, and $K: {\mathcal D}\to \R^+$. The corresponding continuous versions of Wolff's inequality and trace inequalities are derived from their dyadic counterparts. | |
| dc.description | to appear in Indiana Univ. Math. J. (33 pages) | |
| dc.identifier | https://arxiv.org/abs/math/0309286 | |
| dc.identifier | http://arxiv.org/abs/math/0309286 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/68595 | |
| dc.subject | Functional Analysis | |
| dc.subject | Classical Analysis and ODEs | |
| dc.subject | 31C45; 46E35 | |
| dc.title | Nonlinear potentials and two weight trace inequalities for general dyadic and radial kernels | |
| dc.type | text |