JetCoordinateTransformation(JB1, JB2, Y, W)ΒΆ

jet.spad line 6341

JetCoordinateTransformation implements changes of local coordinates. Given are the changes of the coordinates of the base space, i.e. the independent and dependent variables. The transformations of the derivatives are computed via the chain rule. Y (W) contains expressions for the old variables in terms of the new ones.

transform: JB1 -> JetBundleExpression JB2
transform(jv) transforms a jet variable jv into a function of the new coordinates.
transform: JetBundleExpression JB1 -> JetBundleExpression JB2
transform(f) rewrites a function of the old coordinates in the new ones.