4 citations · 4 across the 4 of their papers we have counts for
Showing math.GTShow all
2 papers · 1 filter
math.GT2022
One dimensional non-Hausdorff manifolds and foliations of the plane
André Haefliger, Georges Reeb
The original article titled "Variétés (non séparées) à une dimension et structures feuilletées du plan" was published in 1957 in French in L'Enseignement Mathématique. It establish…
math.GT2007★ 4 cited
On the space of morphisms between étale groupoids
André Haefliger
Given two étale groupoids $\Cal G$ and $\Cal G'$, we consider the set of pointed morphisms from $\Cal G$ to $\Cal G'$. Under suitable hypothesis we introduce on this set a structur…