Michael Jackson mime. His ability to keep one leg straight as he glides while the other bends and seems to walk requires perfect timing." Gordy said of the performance: "From the first beat of 'Billie Jean', I was mesmerized, and when he did his iconic moonwalk, I was shocked, it was magic, Michael Jackson went into orbit, and never came down." In November 1983, Jackson and his brothers partnered with PepsiCo in a $5 million promotional deal that broke records for a celebrity endorsement. The first Pepsi Cola campaign, which ran in the United States from 1983 to 1984 and launched its
Signed graph Signed graph In the area of graph theory in mathematics, a signed graph is a graph in which each edge has a positive or negative sign. A signed graph is balanced if the product of edge signs around every cycle is positive. Three fundamental questions about a signed graph are: Is it balanced? What is the largest size of a balanced edge set in it? What is the smallest number of vertices that must be deleted to make it balanced? The first question is easy to solve quickly; the second and third are computationally intractable (technically, they are NP-hard). The