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Perturbations of Karush-Kuhn-Tuckerconditions play an importantrole forprimaldual interior point methods. Beside the usual logarithmic barrier various further techniques of sequential unconstrained minimization are well known. However other than logarithmic embeddings are rarely studied in connection with Newton path-following methods. A key property that allows to extend the class of methods is the existence of a locally Lipschitz continuous path leading to a primal-dual solution of thedoi:10.1007/0-387-33882-9_18 dblp:conf/ifip7/Grossmann06 fatcat:m5q3seurdrhzjfpf4rzujlhnk4