Arthur Paul Mattuck, emeritus professor of mathematics at MIT, passed away on Friday, Oct. 8, at the age of 91. Mattuck came to MIT as a CLE Moore Instructor, a position he held from 1955 to 1957. He joined the faculty in 1958 and retired after 52 years of service in 2010. He continued to teach through fall 2019. In his specialty, algebraic geometry, Mattuck contributed to the theory of curves and abelian varieties, and to the Riemann-Roch theorem. By the mid-1970s, he had graduated seven PhD students and had…