This is a Java library for vector algebra extracted from a ray tracer Geopt, which was my second year's coursework in the university. It contains things basic rayracer would need in its foundation: "semi-mutable" Vector class (i.e. there are methods to mutate it, but only for performance optimizations), and primitive shapes like Plane and Sphere.
The repo was imported from the SVN repo with entire Geopt, so some commit messages are irrelevant to changes in the MathLib. And, they're in Russian. Historic material! ^_^