P. Koskela

activity

20062026

most citedTrace and density results on regular trees

11 citations · 96 across the 32 of their papers we have counts for

collaborators

Showing 2012 · math.CAShow all

2 papers · 2 filters

math.CA2012

Bounded compositions on scaling invariant Besov spaces

Herbert Koch, Pekka Koskela, Eero Saksman +1

For $0 < s < 1 < q < \infty$ , we characterize the homeomorphisms $φ : ℜ^{n} \to ℜ^{n}$ for which the composition operator $f \mapsto f \circ φ$ is bounded on the homogeneous, sc…

math.CA2012★ 11 cited

Geometry and Analysis of Dirichlet forms

Pekka Koskela, Yuan Zhou

Let $E$ be a regular, strongly local Dirichlet form on $L^{2} (X, m)$ and $d$ the associated intrinsic distance. Assume that the topology induced by $d$ coincides with the…