Asymptotic behavior of the invariant measure for a diffusion related to an NA group
Ewa Damek, Andrzej Hulanicki · Colloquium Mathematicum · 2006
On a Lie group $NA$ that is a split extension of a nilpotent Lie group $N$ by a one-parameter group of automorphisms $A$, the heat semigroup $\mu _t$ generated by a second order subelliptic left-invariant operator $\sum _{j=0}^mY_j +Y$ is considered. Unde