1 − 2 + 4 − 8 + ⋯ 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 the usual sense it has no sum. In a much broader sense, the series has a generalized sum of . Gottfried Leibniz considered the divergent alternating series as early as 1673. He argued that by subtracting either on the left or on the right, one could produce
Wait a Minim! Wait a Minim! Wait a Minim! (1962-68) was a musical revue conceived by Leon Gluckman, with original songs by Jeremy Taylor, and a collection of international folk music arranged by Andrew Tracey. Many authentic instruments were played to accompany dances and pantomimes satirizing the national characteristics and political and social eccentricities of many different countries. The only spoken words were when the cast was introduced, and in the South African scene where apartheid was ridiculed. The revue originated in South Africa and toured Southern Rhodesia (now Zimbabwe), and London before opening on Broadway in New York City. The show opened