TY - JOUR AU - Kh. D. Ikramov AU - A. M. Nazari TI - On the 2-norm distance from a~normal matrix to the set of matrices with a~multiple zero eigenvalue JO - Zapiski Nauchnykh Seminarov POMI PY - 2005 SP - 50 EP - 56 VL - 323 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_2005_323_a5/ LA - ru ID - ZNSL_2005_323_a5 ER -