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
TV UNAM 2005 as a digital-only station, the first in Mexico. As part of the project, UNAM's DGTU (Dirección General de Televisión Universitaria or TV UNAM) began the broadcast of TV UNAM on October 24, 2005 on cable and satellite TV systems, including Cablevisión in the Valley of México and satellite TV provider SKY, and later Dish México. (As of 2014, TV UNAM is now required carriage for all cable systems in Mexico alongside several other public and cultural stations.) With the help of the government-owned OPMA public television network (now Sistema Público de Radiodifusión del Estado Mexicano (SPR)), it expanded its