Operators and Matrices · Volume 5, Issue 4 On the perturbation of singular analytic matrix functions: A generalization of Langer and Najman's results 05-42 Pages 553-564 DOI 10.7153/oam-05-42 Downloads Short PDF Full PDF PNG Authors Fernando De Terán Keywords singular analytic matrix function eigenvalue problem perturbation Puiseux expansions Subject classes 15A18 47A56