Tax evasion and confidence in institutions: expectations models

The aim of this dissertation is the realization of mathematical models on tax evasion, more and more comprehensive and complex, from the (microeconomic) point of view of a taxpayer. In particular, we begin with a static model on tax evasion and confidence in institutions (that extends a classical model with maximization of expected utility), then we transform it in a model on the taxpayer's expectations (using stochastic variables and processes), finally we extend it to a stochastic control model with (public and private) investments.