Siemion Fajtlowicz is a Polish-American mathematician, formerly a professor at the University of Houston. He is known for creating and developing the conjecture-making computer program Graffiti. Fajtlowicz received his Ph.D. in 1967 or 1968 from the Institute of Mathematics of the Polish Academy of Sciences, under the supervision of Edward Marczewski. References External links Siemion Fajtlowicz at Graph Theory White Pages Archived copy of home page at UH Year of birth missing (living people) Living people 20th-century Polish mathematicians 21st-century Polish mathematicians Graph theorists