(mathematical analysis, dated or historical) Ricci calculus; the rules of index notation and manipulation for tensors and tensor fields, as developed by Gregorio Ricci-Curbastro.

(differential geometry) A type of differential geometry in which the differential invariants studied are invariant under volume-preserving affine transformations.

(obsolete, mathematics) A binary invariant

(automotive, mechanical engineering) Steering by means of driving the wheels or treads on one side of a vehicle faster than those on the other side, or driving the wheels or treads on one side in the forward and on the other side in the reverse direction.

(mathematics, computing) Exact differentiation of functions represented in program code by inspecting the code (as opposed to mere evaluation) and repeated application of the chain rule.

Alternative spelling of integrodifferential

plural of partial differential