TY - JOUR AU - Li, Chi-Kwong AU - Rodman, Leiba AU - Å emrl, Peter TI - Linear Maps on Selfadjoint Operators Preserving Invertibility, Positive Definiteness, Numerical Range JO - Canadian mathematical bulletin PY - 2003 SP - 216 EP - 228 VL - 46 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-022-3/ DO - 10.4153/CMB-2003-022-3 ID - 10_4153_CMB_2003_022_3 ER -