Maximally homogeneous para-CR manifolds of semisimple type

Dmitri V. Alekseevsky, Costantino Medori, Adriano Tomassini

An almost para-CR structure on a manifold $M$ is given by a distribution $HM\subset TM$ together with a field $K\in \Gamma (\mathrm{End}(HM))$ of involutive endomorphisms of $HM$. If $K$…