Ekkehard W. Sachs

F. Gerlich, A. M. Giese, Jan H. Maruhn, Ekkehard W. Sachs: Parameter identification in financial market models with a feasible point SQP algorithm. Comp. Opt. and Appl. 51(3): 1137-1161 (2012)

Ralf T. Münnich, Ekkehard W. Sachs, Matthias Wagner: Calibration of estimator-weights via semismooth Newton method. J. Global Optimization 52(3): 471-485 (2012)

Roland Herzog, Ekkehard W. Sachs: Preconditioned Conjugate Gradient Method for Optimal Control Problems with Control and State Constraints. SIAM J. Matrix Analysis Applications 31(5): 2291-2317 (2010)

Jan H. Maruhn, Ekkehard W. Sachs: Robust static hedging of barrier options in stochastic volatility models. Math. Meth. of OR 70(3): 405-433 (2009)

F. Feitzinger, T. Hylla, Ekkehard W. Sachs: Inexact Kleinman-Newton Method for Riccati Equations. SIAM J. Matrix Analysis Applications 31(2): 272-288 (2009)

John A. Burns, Ekkehard W. Sachs, Lizette Zietsman: Mesh Independence of Kleinman--Newton Iterations for Riccati Equations in Hilbert Space. SIAM J. Control and Optimization 47(5): 2663-2692 (2008)

Ekkehard W. Sachs, Rainer Tichatschke (Eds.): System Modelling and Optimization XX, IFIP TC7 20th Conference on System Modelling and Optimization, July 23-27, 2001, Trier, Germany. IFIP Conference Proceedings 258, Kluwer 2003, isbn 1-4020-7565-0

Ekkehard W. Sachs, Stefan Volkwein: Augmented Lagrange-SQP Methods with Lipschitz-Continuous Lagrange Multiplier Updates. SIAM J. Numerical Analysis 40(1): 233-253 (2002)

Belinda B. King, Ekkehard W. Sachs: Semidefinite Programming Techniques for Reduced Order Systems with Guaranteed Stability Margins. Comp. Opt. and Appl. 17(1): 37-59 (2000)

D. Kleis, Ekkehard W. Sachs: Optimal Control of the Sterilization of Prepackaged Food. SIAM Journal on Optimization 10(4): 1180-1195 (2000)

El-Sayed M. E. Mostafa, Ekkehard W. Sachs: A Lagrangian Method for Solving the Optimal Output Feedback Design Problem. Universität Trier, Mathematik/Informatik, Forschungsbericht 00-02 (2000)

A. Battermann, Ekkehard W. Sachs: An Indefinite Preconditioner for KKT Systems Arising in Optimal Control Problems. Universität Trier, Mathematik/Informatik, Forschungsbericht 00-10 (2000)

Friedemann Leibfritz, Ekkehard W. Sachs: Inexact SQP Interior Point Methods and Large Scale Optimal Control Problems. SIAM J. Control and Optimization 38(1): 272-293 (1999)

E. Arian, A. Battermann, Ekkehard W. Sachs: Approximation of the Newton Step by a Defect Correction Process. Universität Trier, Mathematik/Informatik, Forschungsbericht 99-12 (1999)

Friedemann Leibfritz, Ekkehard W. Sachs: Inexact SQP Interior Point Methods and Large Scale Optimal Control Problems. Universität Trier, Mathematik/Informatik, Forschungsbericht 96-09 (1996)

C. T. Kelley, Ekkehard W. Sachs: Local Convergence of the Symmetric Rank-One Iteration. Universität Trier, Mathematik/Informatik, Forschungsbericht 95-07 (1995)

Tankred Rautert, Ekkehard W. Sachs: Computational Design of Optimal Output Feedback Controllers. Universität Trier, Mathematik/Informatik, Forschungsbericht 95-12 (1995)

D. Kleis, Ekkehard W. Sachs: Convergence Rate of the Augmented Lagrangian SQP Method. Universität Trier, Mathematik/Informatik, Forschungsbericht 95-19 (1995)

Heidi Jäger, Ekkehard W. Sachs: Global Convergence of Inexact Reduced SQP Methods. Universität Trier, Mathematik/Informatik, Forschungsbericht 95-20 (1995)

C. T. Kelley, Ekkehard W. Sachs: Approximate Quasi-Newton Methods. Math. Program. 48: 41-70 (1990)