Math

Plese, remind me why math isnt a jewish pseudoscience, consisting of abstraction and casuistry, that has nothing to do with empirical.

Often mathematicians don't realise that they are using datastructures all the time. But they are. For example a group is a set equipped with functions to perform multiplication and inversion as well as a singled out element, the identitiy. Haskell makes it very easy to work with structures that are tuples of objects like this. It's also very easy to build one datastructure out of another and even specify rules about datastructures. For example a matrix is a two-dimensional array of objects. But if the objects form a ring then so does the matrix. This kind of statement is easy to express in Haskell making it well suited to working with algebraic structures. If you've defined formal power series over a ring and you've defined the ring of polynomials over another ring it's trivial to build the ring of power series over polynomials over the integers, say.