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
1977–78 Mexican Primera División season 1977–78 Mexican Primera División season Statistics of Primera División de México in season 1977-78. Atlante was promoted to Primera División. This season was contested by 20 teams, and UANL won the championship. Atlas was relegated to Segunda División. After this season Deportivo Neza bought the Laguna franchise. "Unión de Curtidores won 4-2 on aggregate. Atlas was relegated to Segunda División." "Aggregate tied. Tampico Madero won 4-2 on penalty shootout." "UNAM won 3-2 on aggregate." "Cruz Azul won 3-2 on aggregate." "UANL won 3-2 on aggregate." "UNAM won 5-2 on aggregate." "UANL won 3-1 on aggregate." "UANL won 3-1 on aggregate."