Vatican City title with regard to Vatican City is "Sovereign of the State of the Vatican City". Pope Francis, born Jorge Mario Bergoglio in Buenos Aires, Argentina, was elected on 13 March 2013. His principal subordinate government official for Vatican City as well as the country's head of government is the President of the Pontifical Commission for Vatican City State, who since 1952 exercises the functions previously belonging to the Governor of Vatican City. Since 2001, the president of the Pontifical Commission for Vatican City State also has the title of president of the Governorate of the State of Vatican City. The
Jorge Luis Borges and mathematics Jorge Luis Borges and mathematics Jorge Luis Borges and mathematics concerns several modern mathematical concepts found in certain essays and short stories of Argentinian author Jorge Luis Borges (1899-1986), including concepts such as set theory, recursion, chaos theory, and infinite sequences, although Borges' strongest links to mathematics are through Georg Cantor's theory of infinite sets, outlined in "The Doctrine of Cycles" ("La doctrina de los ciclos"). Some of Borges' most popular works such as "The Library of Babel" ("La Biblioteca de Babel"), "The Garden of Forking Paths" ("El Jardín de Senderos que se Bifurcan"), "The Aleph" ("El Aleph"), an allusion