classifying spaces 1grassmannians 1infinite-dimensional topology 1polar decomposition 1stiefel manifolds 1
From the 1 of 2 linked papers with an AI index.
2 papers
math.FA2026
The topology of finite and infinite-dimensional Stiefel manifolds and the relation to Grassmannians
Nizar El Idrissi
The paper surveys the topology of finite- and infinite‑dimensional Stiefel manifolds, showing how polar decomposition yields a product decomposition that separates the finite‑dimen…
math.FA2026
Intersections of translates of finite-dimensionally valued frame spaces are conditionally slice-full and almost slice-full
Nizar El Idrissi
In recent work, the topology of frame spaces has been studied via Stiefel manifolds, revealing in particular a connectedness property for intersections of…