1 − 2 + 4 − 8 + ⋯ a convergent geometric series whose sum is by the usual formula. The Borel sum of is also ; when Émile Borel introduced the limit formulation of Borel summation in 1896, this was one of his first examples after 1 − 1 + 1 − 1 + ⋯ 1 − 2 + 4 − 8 + ⋯ In mathematics, is the infinite series whose terms are the successive powers of two with alternating signs. As a geometric series, it is characterized by its first term, 1, and its common ratio, −2. As a series of real numbers it diverges, so in
Wait a Minim! The U.S. cast included Sarah Atkinson, Kendrew Lascelles, Michel Martel, April Olrich, Nigel Pegram, Andrew Tracey, Paul Tracey, and Dana Valery. It was directed by Leon Gluckman and choreographed by Frank Staff and Kendrew Lascelles. Scenic design was by Gluckman and Frank Rembach, costume design by Heather Macdonald-Rouse, and lighting design by Rembach and Gluckman. Guitar, drums and other instruments were played by Andrew Tracey, Paul Tracey and Nigel Pegram, and trumpet by Kendrew Lascelles. Other members of the cast played percussion instruments. London recording Broadway recording South Africa recording Wait a Minim! Wait a Minim! (1962-68) was a musical