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
Apertura 2015 Liga MX championship stage aggregate" "1–1 on aggregate, UNAM advanced for being the higher seed in the classification table" "Toluca won 3–2 on aggregate" <section begin=Semifinals/> <section end=Semifinals/> "All times are " "UNAM won 4–3 on aggregate" "UANL won 2–0 on aggregate" <section begin=Finals/> <section end=Finals/> "All times are " "4–4 on aggregate. UANL won 4–2 on penalty kicks" Apertura 2015 Liga MX championship stage The Apertura 2015 Liga MX championship stage commonly known as "liguilla" (mini league) was played from November 25, 2015 to December 13, 2015. A total of eight teams competed in the championship stage to decide the champions of the