Lives in Azkaban. By day, I can turn myself into an animal with the shape of a dog to visit Hogsmeade and Hogwarts. I was part of the Marauders Gang. During my free time, I watch pictures of Muggles in Bikini. I am the Godfather of Harry Potter who is much more handsome than your son.I do not know much in Maths, since I am much more involved in transfiguration and Dark Arts classes and I am out on full moon. But I am willing to share the little I know to those needing help. I particularly like Mathematical finance, PDEs, ODEs.