2 added 89 characters in body

Random walks in

$\mathbb R^3$ is much more rigid than $\mathbb R^2$ are recurrent. They are transient in when considering conformality: Conformal transformations of $\mathbb R^3$R^2\$ do not form a finite-dimensional Lie-group.

Post Undeleted by Roland Bacher
Post Deleted by Roland Bacher