Operators and Matrices · Volume 12, Issue 2 Maps preserving the local spectrum of some matrix products 12-34 Pages 549-562 DOI 10.7153/oam-2018-12-34 Downloads Short PDF Full PDF PNG Authors Zine El Abidine Abdelali Abdelali Achchi Rabi Marzouki Keywords nonlinear preservers local spectra skew double product skew triple product Subject classes 47B49 47A10 47A11