%0 Journal Article %A Heinzner, Peter %A Zöller, Christian %T A structure theorem along fibers of extreme points of the momentum polytope %J Journal of Lie Theory %D 2026 %P 51-76 %V 36 %N 1 %I XXXX %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.1419/ %R 10.5802/jolt.1419 %G en %F 10_5802_jolt_1419