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 Chemistry, UNAM and textile manufacturing and some pharmaceutical industries. However, the harsh national and international context, derived from the mexican revolution movement and the World War I affected the availability of highly skilled personnel. Therefore, in January 1913, Juan Salvador Agraz presented an initiative to the mexican president Francisco I. Madero to create the School of Chemistry. On September 23, 1916, the mexican president Venustiano Carranza promulgated by government-decree the foundation of the National School of Industrial Chemistry (Escuela Nacional de Química Industrial, and later Escuela Nacional de Ciencias Químicas or National School of Chemical Sciences) in the town of Tacuba (north-west