Regresa a mí (Il Divo song) Regresa a mí (Il Divo song) "Regresa a mí" is a 2004 power ballad performed by the multi-national UK-based quartet Il Divo, included in their first studio album of the same name, in 2004. "Il Divo" is a multinational vocal group classical crossover formed in 2003. The group is composed of a quartet of male singers: Swiss tenor Urs Bühler, Spanish baritone Carlos Marín, American tenor David Miller and French pop singer Sébastien Izambard. Originally, the song was written in English and titled "Un-Break My Heart". It was written by the composer and lyricist Diane Warren and produced by David
Joe P. Buhler with a desk calculator up to class number 600, Derrick Lehmer (in the late 1940s) to about 5000, and Buhler with colleagues (in 2001) to 12 million. He continues the project with David Harvey and others. Buhler's research deals with algorithmic algebraic number theory, algebra, and cryptography. He was elected a Fellow of the American Mathematical Society in 2012. Joe P. Buhler Joe Peter Buhler (born 1950 in Vancouver, Washington) is an American mathematician. Buhler received his undergraduate degree from Reed College in 1972, and his Ph.D. from Harvard University in 1977 with thesis "Icosahedral Galois Representations" and thesis advisor