Profile

Using advanced computers, he went from M.I.T. professor to multibillionaire. His Medallion fund had 66 percent average annual returns for decades.

An esteemed journalist and author, he was born to a French count but later shed his aristocratic roots (and name) to became a U.S. citizen.

Ms. Scotto, a leading Italian soprano, sang more than two dozen roles at the Metropolitan Opera and was a charismatic and demanding stage partner.

A noted Violetta in Verdi’s “La Traviata,” she had an equally noted second act as a singing teacher when her performing career ended.

He merged eyewear with fashion, turning a quotidian necessity into high style. He rose from poverty to become one of the world’s wealthiest men.

For 50 years, in movies like “A Man and a Woman” and “My Night at Maud’s,” his specialty was playing the flawed Everyman.

The Spanish mezzo-soprano was internationally acclaimed for her dramatic performances in the works of Mozart, Rossini and Bizet.