Sébastien Izambard Sébastien Izambard Sébastien Izambard (born 7 March 1973) is a French musician, singer, composer, and record producer. His vocal range is classified as popular melody or "voix populi" to a loud, so it has a tenor tessitura phonic. He has been a member of the classical crossover group "Il Divo" since 2004, who has sold over 28 million copies worldwide discs. In 2000 he launched the solo titled ""Libre"" pop album, reaching number No. 1 ranking with the single ""Si tu savais"" achieving excellent sales ranking in France, Canada and Belgium. Currently, Izambard writes, produces and composes for pop artists
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