I Economic Theory.- I.1 Macroeconomic Models.- Investment in Inventory.- Tatonnement Processes with Set-Valued Excess-Demand.- De Minimis Non Curat Praetor or: There Might Be Small Disadvantages in Foreign Trade.- Hidden Symmetries: Lie Groups and Economic Conservation Laws.- I.2 Production and Price Theory.- Sequences of Mechanistic Price Indices.- A Logical Foundation of the Cost of Living Index.- On the Construction of Utility Functions Which Correspond to Homogeneous Demand Systems.- I.3 Game-Theoretic Models.- Are Cartel Laws Bad for Business?.- On the Value of Market Information and Rational Expectations.- I.4 Spatial Economics.- The Von Thunen-Hotelling Rule: On Johann Heinrich von Thunen's Model of General Economic Interdependence in Space and Time.- The Locational Behaviour of the Chemical Industry in the United States After World War II.- Location Theory of the Firm Facing Uncertain Prices and Transport Rates.- On the Art of Successful Analogy Formation: Martin Beckmann's Continuous Model of Economic Space.- II Stochastics and Decision Theory.- Reduction of State Space in Dynamic Programming with Integrated Forecasting.- The Foundations of Probability.- An Optimization Problem in Assemblage Systems.- Optimal Replacement under Differing Amounts of Information.- Lower-Bound Benefits of Air Pollution Reductions in the Munich Metropolitan Area (MMA).- Evolution of Organizations.- Asymptotic Optimality of Differentiated SPRT's for Composite Hypotheses.- Dynamic Linear Models with Rational Expectations of Current Endogenous Variables.- Continuous Linear Representations of Preference Orderings in Vector Spaces.- III Computational Problems.- Optimal Routes in Compound Transportation Systems.- Greedy Solutions for General Set Covering Problems.- The German Nonlinear Income Tax Scale in Linear Programming Models - Linear Approximations and Error Analysis.- Can the Ellipsoid Method Be Efficient?.- A Dual Quadratic Programming Algorithm.- Computational Problems in Economics.- List of Contributors.