The Big O (album) The Big O (album) The Big O is the fifteenth music album recorded by Roy Orbison, and according to Marcel Riesco's official Roy Orbison discography, his second for London Records in the United Kingdom. The music and backing vocals were provided by English group, the Art Movement on all tracks except for "Penny Arcade", which was a studio recording and was released as a single in 1969, peaking at #27 in the UK and would be Orbison's last UK chart success during his lifetime. "Penny Arcade" was also his biggest hit in Australia, spending four weeks at Number One around
Big O notation in 1918 the symbols formula_80 ("right") and formula_81 ("left"), precursors of the modern symbols formula_85 ("is not smaller than a small o of") and formula_87 ("is not larger than a small o of"). Thus the Omega symbols (with their original meanings) are sometimes also referred to as "Landau symbols". This notation formula_76 became commonly used in number theory at least since the 1950s. In the 1970s the big O was popularized in computer science by Donald Knuth, who introduced the related Theta notation, and proposed a different definition for the Omega notation. Landau never used the Big Theta and small