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
Unam sanctam strong Holy Roman Emperor. His treatise "De Monarchia" attempted to refute the pope's claim that the spiritual sword had power over the temporal sword. Dante pointed out that the Pope and Roman Emperor were both human, and no peer had power over another peer. Only a higher power could judge the two "equal swords", as each was given power by God to rule over their respective domains. Unam sanctam On 18 November 1302, Pope Boniface VIII issued the papal bull which historian Brian Tierney calls "...probably the most famous of all the documents on church and state that has down