2 papers
math.AP2026
Restriction of eigenfunctions on products of spheres to submanifolds of maximal flats
Yunfeng Zhang
Let be a product of rank-one symmetric spaces of compact type, each of dimension at least . We establish sharp bounds for the restriction of Laplace--Beltrami eigenfun…
math.RT2025
Bounds of restriction of characters to submanifolds
Yunfeng Zhang
A fruitful approach to studying the concentration of Laplace--Beltrami eigenfunctions on a compact manifold, as the eigenvalue tends to infinity, is to bound their restriction to s…