Frisch’s 1933 macroeconomic model for business cycles has been extensively studied. The present study is the first comprehensive mathematical analysis of Frisch’s model. It provides a detailed reconstruction of how the model was built. We demonstrate the workability of Frisch’s PPIP model without adding hypotheses or changing the value of Frisch’s parameters. We prove that (1) the propagation model oscillates; (2) the PPIP model is mathematically incomplete; (3) the latter could have been calibrated by Frisch; (4) Frisch’s analysis and demonstration (...) are based on Poincaré’s methodology. (shrink)

What is econophysics? What makes an econophysicist? Why are financial economists reluctant to use results from econophysics? Can we overcome disputes concerning hypotheses used in financial economics and that make no sense for econophysicists? How can we create a profitable dialogue betweenfinancial economists and econophysicists? How do we develop a common theoretical framework allowing the creation of more efficient models for the financial industry? This book moves beyond the disciplinary frontiers in order to initiate the development of a common theoretical (...) framework that makes sense for both traditionally trained financial economists and econophysicists. Unlike other publications dedicated to econophysics, this book is written by twofinancial economists and it situates econophysics in the evolution of financial economics. The major issues that concern the collaboration between the two fields are analyzed in detail. More specifically, this book explains the theoretical and methodological foundations of these two fields in anaccessible vocabulary providing the first extensive analytic comparison between models and results from both fields. The book also identifies the major conceptual gate-keepers that complicate dialogue between the two communities while it provides elements to overcome them. By mixing conceptual, historical, theoretical and formal arguments our analysis bridges the current deaf dialogue between financial economists and econophysicists. This book details the recent results in econophysics that bring it closer to financial economics. So doing, it identifies what remainsto be done for econophysicists to contribute significantly to financial economics. Beyond the clarification of the current situation, this book also proposes a generic model compatible with the two fields, defining minimal conditions for common models. Finally, this book provides a research agendafor a more fruitful collaboration between econophysicists and financial economists, creating new research opportunities. In this perspective, it lays the foundations for common theoretical framework and models. (shrink)

L’article introductif du numéro de la revue Philosophia Scientiæ met en perspective le dialogue entre l’histoire du livre et de l’édition et l’histoire des sciences et des techniques. Malgré leurs intérêts communs, en dehors des quelques études, ces deux champs demeurent largement disjoints. Nous mettons en perspective la tension entre ces deux champs afin d’inviter à enrichir le dialogue pluridisciplinaire. L’histoire du livre et de l’édition, d’une part, et l’histoire des sciences et des techniques, d’autre part, se sont déjà intéressées, (...) séparément, à certains aspects matériels – qu’ils soient techniques ou financiers – liés à la confection des imprimés. Cependant, comme le montre cette réunion d’articles rédigés par des spécialistes de divers champs disciplinaires et professionnels, d’autres approches, méthodes, sujets émergent pour appréhender l’élaboration des sciences. (shrink)