A form of this operation appearing in the exponent of the formula for the rotation operator is generalized by the Lie (-5[1])bracket. This (-5[1])operation plus the basis vectors times the Christoffel symbol equals a form of this operation used to define parallel (15[2])transport. The square of the (15[1])exterior form of this (15[2])operation always equals (15[2]10[1])zero. The (15[1])covariant form of this operation appears in the geodesic (15[1])equation. Schwarz's theorem, also known as (*) Clairaut's theorem, gives the (10[1])conditions for when two forms of this (10[1])operation (10[1])commute. (10[1])This operation is applied to each entry in the Jacobian (10[2])matrix. The dot (10[1])product of a unit vector with the gradient is the directional form of this (10[1])operation. This operation applied to a parametric curve yields the tangent (10[2])vector. For 10 points, what operation is the inverse of integration? (10[3])■END■