In mathematical statistics courses, students learn that the quadratic function is minimized when x mean of random variable X, and graphs this for any two distributions X are simply translates each other. We focus on problem minimizing defined by in context mixtures probability discrete, absolutely continuous, singular continuous types. This important, example, Bayesian statistics, one attempts ...

In this work, we propose the construction of discrete-time systems with two time scales in which infectious diseases dynamics are involved. We deal general situations. first, consider that individuals affected by disease move between generalized sites on a faster scale than itself. The second situation includes acting together another slower process. Once models have been built, conditions esta...