Santiago López de Medrano Santiago López de Medrano Santiago López de Medrano Sánchez (born October 15, 1942 in Mexico City) is a Mexican mathematician, who works as a researcher at the National Autonomous University of Mexico (UNAM). His research has concerned knot theory, singularity theory, biomathematics, and differential topology. López de Medrano did his undergraduate studies at UNAM, and earned his Ph.D. from Princeton University in 1969, under the supervision of William Browder. He returned to UNAM as a researcher and professor in 1968, and was president of the Mexican Mathematical Society from 1969 to 1973. López de Medrano presented his work on knot
School of Medicine, UNAM service. The school also is in charge of the National Exam of Medical Residencies (ENARM), which means that if any MD in Mexico wants to apply for a residency, they should apply to this school, it is regarded to be very hard, and students some times take a full year of study in order to pass it. Approximately 22,000 students present the exam and only 4,000 pass it every year. The school has two Howard Hughes Medical Institute Scholars and endowment from the NIH extramural research program. School of Medicine, UNAM UNAM's School of Medicine (Spanish: Facultad de Medicina de