Course 48 Algebraic Statistics
https://en.wikipedia.org/wiki/Algebraic_statistics
https://en.wikipedia.org/wiki/Algebra_of_random_variables
https://en.wikipedia.org/wiki/Inverse_distribution
https://en.wikipedia.org/wiki/Distribution_of_the_product_of_two_random_variables
https://en.wikipedia.org/wiki/Mellin_transform