Pointwise Characterizations of Besov and Triebel-Lizorkin Spaces and Quasiconformal Mappings

Pekka Koskela, Dachun Yang, Yuan Zhou

In this paper, the authors characterize, in terms of pointwise inequalities, the classical Besov spaces ${\dot{B}}_{p,q}^s$ and Triebel-Lizorkin spaces ${\dot{F}}_{p,q}^s$ for all $s…