  This paper brings the main definitions and results from "The Ramanujan
Property for Simplicial Complexes" [arXiv:1605.02664]. No proofs are given.
  Given a simplicial complex $\mathcal{X}$ and a group $G$ acting on
$\mathcal{X}$, we define Ramanujan quotients of $\mathcal{X}$. For $G$ and
$\mathcal{X}$ suitably chosen this recovers Ramanujan $k$-regular graphs and
Ramanujan complexes in the sense of Lubotzky, Samuels and Vishne. Deep results
in automorphic representations are used to give new examples of Ramanujan
quotients when $\mathcal{X}$ is the affine building of an inner form of
$\mathbf{GL}_n$ over a local field of positive characteristic.
