2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/112860The main result of the paper is a Borel type description of the $Sp(1)^n$-equivariant cohomology ring of the manifold $Fl_n(\mathbb{H})$ of all complete flags in $\mathbb{H}^n$. To prove this, we obtain a Goresky-Kottwitz-MacPherson type description of that ring.12 pagesDifferential GeometryAlgebraic Topology57T15; 19L47text