Embeddings of block-radial functions -- approximation properties and nuclearity

Alicja Dota, Leszek Skrzypczak

Let $R_{\gamma }{B}_{p,q}^s(\mathbb{R}d)$ be a subspace of the Besov space $B_{p,q}^s({\mathbb{R}}^d)$ that consists of block-radial (multi-radial) functions. We study an asymptotic behav…