A design commemorating the 50th birthday of Prof. Marcus du Sautoy, the Professor of Mathematics at the University of Oxford. The design is made to look like a very artistic diagram. It hides the number 50 among the circles. With binary code that doubles like a planetary orbit. It has an elegant typographic treatment to the type. The letter's elongated limbs create ornamental filigree and unique ligature. The ornamented rim design that grows from a simple shape to a more complex one.