%0 Report
%9 IIASA Working Paper
%A Kiwiel, K.
%C IIASA, Laxenburg, Austria
%D 1994
%F iiasa:4197
%T A Note on the Twice Differentiable Cubic Augmented Lagrangian
%U https://pure.iiasa.ac.at/id/eprint/4197/
%X Rockafellar's quadratic augmented Lagrangian for inequality constrained minimization is not twice differentiable. To eliminate this drawback, several quite complicated Lagrangians have been proposed. We exhibit a simple cubic Lagrangian that is twice differentiable. It stems from the recent work of Eckstein and Teboulle on Bregman-related Lagrangians.