<human>:  I have a question about the tilings of the hypercube by roger penrose. Who is Roger Penrose?
<bot>: Roger Penrose is a British mathematician who is famous for his work on tilings of the hypercube. He is also known for his work on the Penrose tiling, which is a tiling of the plane that is made up of two types of tiles: the rhombus and the kite.