| 2014 | 
  
  
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    Markus Göhl and Karl-Heinz Borgwardt
    The average number of pivot steps of the simplex-algorithm based on a generalized rotation-symmetry-model
 preprint (2014)
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 Auch erschienen in: Mathematical Methods of Operations Research, Volume 80, Issue 3 (2014),p. 329-366. DOI https://doi.org/10.1007/s00186-014-0483-8
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   | 
    Karl-Heinz Borgwardt
    Wie schnell arbeitet das Simplexverfahren normalerweise? Oder: das Streben nach (stochastischer) Unabhängigkeit
 Mitteilungen der Deutschen Mathematiker-Vereinigung 22,  80-92  (2014)
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    | 2010 | 
  
  
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    Karl-Heinz Borgwardt
    Aufgabensammlung und Klausurentrainer zur Optimierung : Für die Bachelorausbildung in mathematischen Studiengängen
 (2010)
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    | 2009 | 
  
  
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    Operations Research Proceedings 2008: Selected Papers of the Annual International Conference of the German Operations Research Society (GOR) University of Augsburg, September 3-5, 2008
 in: , ed. by Bernhard Fleischmann, Karl-Heinz Borgwardt, Robert Klein, Axel Tuma,  (Springer: Berlin [u.a.], 2009)
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    | 2007 | 
  
  
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    Karl-Heinz Borgwardt
    Average-case analysis of the double description method and the beneath-beyond algorithm
 Discrete & Computational Geometry 37,  175-204  (2007)
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    | 2004 | 
  
  
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    Karl-Heinz Borgwardt
    Die mittlere Schrittzahl beim Simplexverfahren - als vorlesbare Vereinfachung
 in: ,  (2004)
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    | 2002 | 
  
  
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    Petra Huhn and Karl-Heinz Borgwardt
    Interior-point methods: worst case and average case analysis of a phase-I algorithm and a termination procedure
 Journal of Complexity 18,  833-910  (2002)
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   | 
    Karl-Heinz Borgwardt
    Linear programming
 in: Knowledge for sustainable development: an insight into the encyclopedia of life support systems,  (Environment and Development series)  283-318  (UNESCO/EOLSS: Paris, 2002)
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 Contributions to Theme 2.2 "Optimization and Operations Research"
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    | 2001 | 
  
  
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    Karl-Heinz Borgwardt
    Optimierung, Operations Research, Spieltheorie : mathematische Grundlagen
 (Birkhäuser: Basel [u.a.], 2001)
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   | 
    Karl-Heinz Borgwardt
    Probabilistic analysis of simplex algorithms
 in: Encyclopedia of optimization, ed. by Christodoulos A. Floudas,  368-379  (Kluwer: Dordrecht, 2001)
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    | 1999 | 
  
  
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    Karl-Heinz Borgwardt and Petra Huhn
    A lower bound on the average number of Pivot-steps for solving linear programs: valid for all variants of the simplex-algorithm
 Mathematical Methods of Operations Research 49,  175-210  (1999)
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   | 
    Karl-Heinz Borgwardt
    A sharp upper bound for the expected number of shadow vertices in LP-polyhedra under orthogonal projection on two-dimensional planes
 Mathematics of Operations Research 24,  529-784  (1999)
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 Due to an error in typesetting, an incorrect version of Figure 1 was printed as part of this paper in Mathematics of Operations Research, Vol. 24 No. 3, August 1999, pp.
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    | 1998 | 
  
  
   | 
    Petra Huhn and Karl-Heinz Borgwardt
    An upper bound for the average number of iterations required in phase II of an interior-point-method
 Operations Research Proceedings 1997,  19-24  (1998)
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   | 
    Karl-Heinz Borgwardt
    Ideas leading to a better bound on the average number of pivot steps for solving an LP
 Operations Research Proceedings 1997,  1-12  (1998)
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    | 1997 | 
  
  
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    Karl-Heinz Borgwardt
    Average complexity of a gift-wrapping algorithm for determining the convex hull of randomly given points
 Discrete & Computational Geometry 17,  79-109  (1997)
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 Auch erschienen als DFG-Schwerpunkt-Report Nr. 478, 1993, 50 Seiten
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    | 1994 | 
  
  
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    Karl-Heinz Borgwardt and Jürgen Brzank
    Average saving effects in enumerative methods for solving Knapsack problems
 Journal of Complexity 10,  129-141  (1994)
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   | 
    Karl-Heinz Borgwardt
    Improving the theoretical upper bound for the expected number of shadow-vertices in the Rotation-Symmetry-Model
 (DFG-Schwerpunkt Report ; 537)  (1994)
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   | 
    Karl-Heinz Borgwardt
    Verschärfung des Polynomialitätsbeweises für die erwartete Anzahl von Schattenecken im Rotationssymmetrie-Modell
 in: Beiträge zur angewandten Analysis und Informatik : Helmut Brakhage zu Ehren, ed. by Eberhard Schock,  (Berichte aus der Mathematik)  13-33  (Shaker: Aachen, 1994)
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 auch erschienen als DFG-Schwerpunkt Report Nr. 537, 1994: Improving the Theoretical Upper Bound for the Expected Number of Shadow-Vertices in the Rotation-Symmetry-Model
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    | 1993 | 
  
  
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    Karl-Heinz Borgwardt, Renate Damm, Rudolf Donig and Gabriele Joas
    Empirical studies on the average efficiency of simplex variants under rotation symmetry
 ORSA Journal on Computing 5,  249-260  (1993)
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    | 1992 | 
  
  
   | 
    Karl-Heinz Borgwardt and Gabriele Joas
    Verbesserungen in der Laufzeitanalyse des Simplexverfahrens
 (Report ; 419)  (Universität Augsburg, Institut für Mathematik: Augsburg, 1992)
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    | 1991 | 
  
  
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    Karl-Heinz Borgwardt, Norbert Gaffke, Michael Jünger and Gerhard Reinelt
    Computing the convex hull in the Euclidean plane in linear expected time
 in: Applied geometry and discrete mathematics: the Victor Klee Festschrift, ed. by Bernd Sturmfels and Peter Gritzmann,  (DIMACS Series in Discrete Mathematics and Theoretical Computer Science ; 4)  91-107  (American Mathematical Society: Providence, RI, 1991)
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   | 
    Karl-Heinz Borgwardt and Gabriele Joas
    Cycling examples for the shadow vertex algorithm
 (Report ; 336)  (Universität Augsburg, Institut für Mathematik: Augsburg, 1991)
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   | 
    Karl-Heinz Borgwardt and Birgit Tremel
    The average quality of Greedy-algorithms for the subset-sum-maximization problem
 Zeitschrift für Operations Research 35,  113-149  (1991)
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    | 1990 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Probabilistic analysis of the simplex method
 in: Mathematical Developments Arising from Linear Programming, ed. by Jeffrey C. Lagarias and Michael J. Todd,  (Contemporary Mathematics ; 114)  1097863  (American Mathematical Society: Providence, Rhode Island, 1990)
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    | 1988 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Probabilistic analysis of the simplex method
 Operations Research Proceedings 16,  564-575  (1988)
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    | 1987 | 
  
  
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    Karl-Heinz Borgwardt
    Probabilistic analysis of optimization algorithms: some aspects from a practical point of view
 Acta Applicandae Mathematica 10,  171-210  (1987)
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   | 
    Karl-Heinz Borgwardt
    Probabilistische Analyse von Optimierungs-Algorithmen
 Operations research proceedings 15,  571-588  (1987)
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 | 
  
   | 
    Karl-Heinz Borgwardt
    The simplex method: a probabilistic analysis
 (Algorithms and Combinatorics ; 1)  (Springer: Berlin, 1987)
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    | 1986 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Liquiditätsplanung einer Bank aus mathematischer Sicht
 Jahrbuch der Universität Augsburg 1985,  171-182  (1986)
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    | 1985 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Average behaviour of the simplex-method: some improvements in the analysis of the rotation-symmetry-model
 preprint (Universität Augsburg, Preprint ; 87)  (Universität Augsburg: Augsburg, 1985)
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   | 
    Karl-Heinz Borgwardt
    Der durchschnittliche Rechenaufwand beim Simplexverfahren
 Operations Research Proceedings 13,  647-660  (1985)
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    | 1984 | 
  
  
   | 
    Karl-Heinz Borgwardt
    A probabilistic analysis of the simplex-method [Habilitationsschrift]
 (Universität Kaiserslautern: Kaiserslautern, 1984)
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    | 1982 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Some Distribution-Independent Results About the Asymptotic Order of the Average Number of Pivot Steps of the Simplex Method
 Mathematics of Operations Research 7,  441-462  (1982)
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   | 
    Karl-Heinz Borgwardt
    The Average number of pivot steps required by the Simplex-Method is polynomial
 Zeitschrift für Operations Research 26,  157-177  (1982)
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    | 1980 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Die Problematik rein mathematischer Kriterien für Investitionsentscheidungen
 in: Anwendungsorientierter Mathematikunterricht : unter besonderer Berücksichtigung der Möglichkeiten von Rechnern, ed. by Norbert Christmann,  26-36  (Schöningh: Paderborn, 1980)
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   | 
    Karl-Heinz Borgwardt
    Die asymptotische Ordnung der mittleren Schrittzahl von Simplexverfahren
 Operations-Research-Verfahren = Methods of Operations Research 37,  81-95  (1980)
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    | 1979 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Zum Rechenaufwand von Simplexverfahren
 Operations-Research-Verfahren = Methods of Operations Research 31,  83-97  (1979)
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    | 1978 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Untersuchungen zur Asymptotik der mittleren Schrittzahl von Simplexverfahren in der linearen Optimierung
 Operations-Research-Verfahren = Methods of Operations Research 28,  332-345  (1978)
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    | 1977 | 
  
  
   | 
    Karl-Heinz Borgwardt
    Untersuchungen zur Asymptotik der mittleren Schrittzahl von Simplexverfahren in der linearen Optimierung
 (Universität Kaiserslautern: Kaiserslautern, 1977)
 PDF  | BibTeX | RIS
 Kaiserslautern, Univ., Diss., 1977
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