Ricci calculus

Etymology
Named after, who developed the notation and theory in the late 19th century.

Noun

 * 1)  A formal system in which index notation is used to define tensors and tensor fields and the rules for their manipulation; the theory of tensor calculus as developed by Gregorio Ricci-Curbastro, which formed the foundation of the modern theory.
 * 2) * 1945 [McGraw-Hill, 2nd Edition],, The Development of Mathematics, Dover, 1992, page 357,
 * The method of calculation is the absolute differential calculus, or tensor analysis, of M. M. G. Ricci (1853–1925, Italian), which was noted earlier in connection with the general progress of recent mathematics toward structure. The Ricci calculus, however, originated in the algebra of quadratic differential forms.The Ricci calculus did not come into its own geometrically until it was publicized by the relativists, when the geometers adopted and further developed it.

Translations

 * Italian: calcolo tensoriale