  Finite quantal systems at high angular momenta may exhibit vortex formation
and localization. These phenomena occur independent of the statistics of the
repulsively interacting particles, which may be of bosonic or fermionic nature.
We analyze the relation between vortex localization and formation of stable
Wigner molecules at high angular momenta in the view of particle-hole
duality.Trial wave functions for the vortex states and the corresponding
fermion-boson relations are discussed.
