The harmonic mean is the special case of the power mean and is one of the Pythagorean means. In older literature, it is sometimes called the subcontrary mean. The volume-to-surface area ratio for a cylindrical container with height and radius and the mean curvature of a general surface are related to the harmonic mean.
The name SMITH is probably the most common of all surnames. The only names that give it any competition for this title would be Jones and Johnson. The most widely accepted derivation of the name is from the Anglo-Saxon SMITAN and the Germanic verb âSmioanâ meaning to smite or strike.
According to Ancestry.com, Greaves is a topographic name from Old English grafe brushwood, thicket, or a habitational name from any of the places named with this word, for example in Cumbria, Lancashire, and Staffordshire. They give Graves as a patronymic from Grave (i.e., meaning son of Grave).he surname of Graves, and variations of this name, did not have a single place of origin or a single original meaning. The following sources give some of the various explanations of the meaning and derivation of the name.