Partial dynamical symmetry in Bose-Fermi systems

5 pages, 1 figure, 2 tables, accepted for publication in Physical Review C (Rapid Communications)International audienceWe generalize the notion of partial dynamical symmetry (PDS) to a system of interacting bosons and fermions. In a PDS, selected states of the Hamiltonian are solvable and preserve the symmetry exactly, while other states are mixed. As a first example of such novel symmetry construction, spectral features of the odd-mass nucleus $^{195}$Pt are analyzed