Streaking field purely for shock and entertainment value or political purposes. The first known instance of streaking in cricket took place on 22 March 1974, the first day of the third test between Australia and New Zealand at Auckland. Half an hour before the end of the day's play, while New Zealand was batting, "a dark-haired young man" ran from near the sightscreen, through mid-wicket and disappeared between the stands near the square-leg boundary. The incident occurred quickly and police did not have time to react. Reports differ on whether the man was completely naked, with some accounts stating that he
Square root of a matrix root". An example is the matrix formula_11. In general, a complex matrix with positive real eigenvalues has a unique square root with positive eigenvalues called the "principal square root". Moreover, the operation of taking the principal square root is continuous on this set of matrices. If the matrix has real entries, then the square root also has real entries. These properties are consequences of the holomorphic functional calculus applied to matrices. The existence and uniqueness of the principal square root can be deduced directly from the Jordan normal form (see below). For a 2 × 2 matrix, there are explicit