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 2018 Liga MX championship stage the long tournament era from 1943–44 to 1995–96)." <section begin=Bracket/> <section end=Bracket/> <section begin=Quarterfinals /> "All times are " "Cruz Azul won 3–1 on aggregate" "Monterrey won 3–0 on aggregate" "UNAM won 4–3 on aggregate" "América won 5–4 on aggregate" <section begin=Semifinals/> "All times are " "1–1 on aggregate and tied on away goals. Cruz Azul advanced for being the higher seed in the classification table." "América won 7–2 on aggregate <section begin=Finals/> "América won 2–0 on aggregate" Apertura 2018 Liga MX championship stage The Apertura 2018 Liga MX championship stage commonly known as Liguilla (mini league) was being played