Sébastien Izambard Izambard is also an accomplished music composer, pianist, and guitar player In Paris he has written music for many French artists. In 2001, he performed with Johnny Hallyday as a guest in the Olympia Theater in Paris. His music, greatly influenced by Jeff Buckley, earns him the acknowledgement of French and Canadian audiences. French singer Florent Pagny is his musical godfather. Sébastien says that composing and writing songs is his passion, writing for the pleasure of writing. Before joining Il Divo wrote and produced songs for other French artists. In parallel with Il Divo, Izambard continued writing songs with pop
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