Pekka Pankka

activity

20072026

most citedUniform cohomological expansion of uniformly quasiregular mappings

8 citations · 38 across the 33 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.GT2015

Local monodromy of branched covers and dimension of the branch set

Martina Aaltonen, Pekka Pankka

We show that, if the local dimension of the branch set of a discrete and open mapping $f : M \to N$ between $n$ -manifolds is less than $(n - 2)$ at a point $y$ of the image of the…

math.GT2015

Free vs. Locally Free Kleinian Groups

Pekka Pankka, Juan Souto

We prove that Kleinian groups whose limit sets are Cantor sets of Hausdorff dimension $< 1$ are free. On the other hand we construct for any $ε > 0$ examples of non-free purely hyperb…

math.MG2015★ 1 cited

Quasiconformal non-parametrizability of almost smooth spheres

Pekka Pankka, Vyron Vellis

We show that, for each $n \geq 3$ , there exists a smooth Riemannian metric $g$ on a punctured sphere $S^{n} ∖ {x_{0}}$ for which the associated length metric extends to…