The harmonic mean of numbers (where, ...,) is the number defined by. (1). The harmonic mean of a list of numbers may be computed in the Wolfram Language using. [ list ]. The special cases of and are therefore given by. (2). (3). and so on. The harmonic means of the integers from 1 to for, 2, ...
There are several theories about the origins of the Sanders name (see page on History Of Saunders) We believe our Sanders family originated in Scotland. Many of the early Sanders then migrated to England and Ireland and eventually to America.
The surname may also have derived as a nickname for a man with strikingly glossy black hair or for one with a raucous voice, from the Middle English or the Old French Corbin. Corbun, raven. The personal name was recorded as Corbin(us) in the Domesday Book of 1086 in Warwickshire and Kent.The surname itself is first recorded in the late 11th Century (see below). Hugo de Corbun was mentioned in the Domesday Book of Norfolk and Suffolk.his most interesting surname may have derived from either of two origins. Firstly, it may be of locational origin, from either Corbon in Calvados or Corbon in Orne, in France. Hence the name may have arrived in England after the Norman Conquest of 1066.