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arXiv · 2108.04789

Multi-parameter Carleson embeddings for $p\neq 2$ on $T^2$ or for $p=2$ on $T^4$, and why the proofs fail

P. Mozolyako·G. Psaromiligkos·A. Volberg
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Abstract

This note contains a plethora of counterexamples to attempts to generalize the results of bi-parameter embedding from $p=2$ case to either $p>2$ or $p<2$. This is in striking difference to $p=2$ case that was fully understood in the series of papers \cite{AMPS}, \cite{AMPVZ-K}, \cite{MPVZ1}, \cite{MPVZ2}, \cite{AHMV}, \cite{MPV}. We also build a counterexample to small energy majorization on bi-tree. This counterexample shows that straightforward generalizations of methods of \cite{AMPVZ-K}, \cite{MPVZ1}, \cite{MPVZ2}, \cite{AHMV} from $2$-tree $T^2$ or $3$-tree $T^3$ to $4$-tree $T^4$ will not work even for $p=2$ unless some new approach is invented.

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P. Mozolyako, G. Psaromiligkos, A. Volberg. 2021-08-10. Multi-parameter Carleson embeddings for $p\neq 2$ on $T^2$ or for $p=2$ on $T^4$, and why the proofs fail. https://arxiv.org/abs/2108.04789

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