Distributional embeddings of the first limit Bourgain-Rosenthal-Schechtman space

Abstract

We classify the distributional self-embeddings of the centered first limit Bourgain-Rosenthal-Schechtman space $R_ω^{p,0}$, $1<p<\infty$. Using a Boolean rigidity principle for its canonical independent-sum realization, we show that every such embedding is induced by a finite packing of Bernoulli factors. As a consequence, we also prove that $R_ω^{p,0}$ admits no proper non-zero internal compressions. Moreover, for $p\notin2\mathbb N$, we obtain a complete description of the linear isometric embeddings of the non-centered space $R_ω^p$, and, for $p\neq2$, we determine its group of surjective linear isometries.