Groupe d’études et de recherche en analyse des décisions

G-2007-62

The Squared Slacks Transformation in Nonlinear Programming

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We recall the use of squared slacks used to transform inequality constraints into equalities and several reasons why their introduction may be harmful in many algorithmic frameworks routinely used in nonlinear programming. Numerical examples performed with the sequential quadratic programming method illustrate those reasons.

, 13 pages