(differential geometry) A manifold that is locally similar enough to a Euclidean space (ℝⁿ) to allow one to do calculus;

(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.

A surname from German.

plural of Diffenderfer

(typically in the plural) An unforeseen equipment problem, such as a hardware failure or software bug, that makes it difficult or impossible to perform a desired action.

A great or insurmountable difference.

Third-person singular simple present indicative form of know the difference between one's ass and a hole in the ground

present participle of know the difference between one's ass and a hole in the ground

(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.