This study addresses market concentration among major corporations, highlighting the utility of relative entropy for understanding diversification strategies. It introduces entropic value at risk (EVaR) as a coherent risk measure, which is an upper bound to the conditional value at risk (CVaR),...

This work deals with the Cobb-Douglas production function and related assumptions. The function has been at the center of the so-called ”capital controversy” and the object of a good deal of econometric research. We argue that while in the early days when the function was proposed the...

Kaldor-Kalecki model is one of the first models that use non-linear functions to explain the chaotic behaviour of the economic system. Re-elaborating the model we tried to prove the existence of a Bautin bifurcation for the discrete version of the model with an adaptation of the mathematical...

The main objective of this work is to test whether some stochastic models typically used in financial markets could be applied to the COVID-19 pandemic. To this end we have implemented the ARIMAX and Cox-Ingersoll-Ross (CIR) models originally designed for interest rate pricing but transformed by...

This work aims to conduct an analysis of the techniques for assessing and managing emerging risks that impact the insurance sector and to investigate issues related to climate change. The investigation took into account the regulatory obligations that arise for the Company to determine the...

This work aims to extend previous research on how a trifactorial stochastic model, which we call CIR3, can be turned into a forecasting tool for energy time series. In particular, in this work, we intend to predict changes in the industrial production of electric and gas utilities.The model...

We evaluate Brunnermeir’s Theory of Resilience in the context of complex system dynamics where there however can be local and global resilience, vulnerability, loss of resilience, cycles, disruptive contractions, and persistent traps. In the paper, we refer to three-time scales. First, for...

Kaldor-Kalecki model is one of the first models that use non-linear functions to explain the chaotic behaviour of the economic system. Re-elaborating the model we tried to prove the existence of a Bautin bifurcation for the discrete version of the model with an adaptation of the mathematical...