Members of the western concert flute family or private collections. This distinctive sounding instrument is rarely found at present. A few American publications for flute choir currently include a part for an E (soprano) flute, an instrument pitched a minor third higher than the standard C flute. In these publications, an alternative part is provided either for the C flute or for the piccolo. The standard concert flute is by far the most common member of the flute family. The flute is used in many ensembles including concert bands, orchestras, flute ensembles, occasionally jazz bands and big bands. The instrument is pitched in C and has a
Smallest-circle problem Smallest-circle problem The smallest-circle problem or minimum covering circle problem is a mathematical problem of computing the smallest circle that contains all of a given set of points in the Euclidean plane. The corresponding problem in "n"-dimensional space, the smallest bounding-sphere problem, is to compute the smallest "n"-sphere that contains all of a given set of points. The smallest-circle problem was initially proposed by the English mathematician James Joseph Sylvester in 1857. The smallest-circle problem in the plane is an example of a facility location problem (the 1-center problem) in which the location of a new facility must be chosen