*preprint*

**Inserted:** 7 aug 2019

**Last Updated:** 11 dec 2019

**Year:** 2019

**Abstract:**

We construct positive solutions to the equation \[-\Delta_{\mathbf{H}^n} u =u^{\frac{Q+2}{Q-2}}\] on the Heisenberg group, singular in the origin, similar to the Fowler solutions of the Yamabe equations on $\mathbf{R}^n$. These satisfy the homogeneity property $u\circ\delta_T=T^{-\frac{Q-2}{2}}u$ for some $T$ large enough, where $Q=2n+2$ and $\delta_T$ is the natural dilation in $\mathbf{H}^n$. We use the Lyapunov-Schmidt method applied to a family of approximate solutions built by periodization from the global regular solution classified by Jerison and Lee.