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.
Smith is the most common family name (surname) in the United Kingdom and the United States,[1] representing more than 1 out of every 100 persons in each of these countries.edit] Comparative note Although Smith is the most common surname in the English-speaking world, it is held by fewer than five-million people worldwide. It is, therefore, dwarfed by the most common surname-Li-which is held by over one hundred and eight million people.