Nicolau, JoãoDamásio, Bruno2019-07-112019-07-112018Damásio, Bruno, (2018). " Essays on econometrics. Multivariate Markoc chains". Tese de Doutoramento. Universidade de Lisboa, Instituto Superior de Economia e Gestão.http://hdl.handle.net/10400.5/18128Tese de Doutoramento em Matemática aplicada à Economia e GestãoThis Dissertation is about Markov chains and their role in economics and in econometrics theory. Four essays on the Markov chain ap- proach are presented. We start by illustrating the analytical potential of multivariate Markov chains in the field of economic history, in particular with regard to a test of the Schumpeterian hypothesis of creative destruction. Then, we ilustrate the flexibility of Markov chains, and their per- tinence to situations that go beyond their traditional applicability: i) how can a Markov chain play the role of covariates; ii) how can a Markov chain representation be useful to compute expected hitting times. Finally, we present a new methodology for testing and detecting multiple structural breaks in multivariate Markov chains, where the dates at which the structural breaks occur are unknown.engCadeias de MarkovEconometriaMatemática aplicada à economiadoctoral thesis101611765