Business cycle dynamics : models and tools ; with 7 tables usiness cycle theory has been one of the fastest growing fields in modern nonlinear economic dynamics. The book is centered around models of multiplier accelerator type emerging from Samuelsons seminal work later developed into nonlinear formats by HIcks and Goodwin. These models left open ends as the tools then available did not permit more systematic analysis. The present situation is different due to the emergence of new methods also focusing global analysis. The focus on classical causal or recursive models implies a deviation from current main stream business cycle theory based on rational expectations which in view of the possibility of mathematical chaos becomes untenable. This book is a rejoinder to Puu and Shushko Oligopoly Dynamics Tools and Models Springer Verlag 2002. TOC:Aims and Scope. Some Methods for the Global Analysis of Closed Invariant Curves in Two Dimensional Maps. Center Bifurcation for a Two Dimensional Piecewise Linear Map. Short History of the Multiplier Accelerator Model. Multiplier Accelerator Models with Random Perturbations. Non autonomous Business Cycle Model. The Hicksian Model with Investment Floor and Income Ceiling. Growth Cycles in a Modified Hicksian Business Cycle Model. Coexistence of Attractors and Homoclinic Loops in a Kaldor Like Business Cycle Model. Expectations and the Multiplier Accelerator Model. Floors and or Ceilings and the Persistence of Business Cycles. A Goodwin Type Model with Cubic Investment Function. A Goodwin Type Model with a Piecewise Linear Investment Function.