li SciMax Toolbox limit

SciMax Toolbox >> liediff

liediff

Maxima Function

Calling Sequence

liediff (v, ten)

Description

Computes the Lie-derivative of the tensorial expression ten with respect to the vector field v. ten should be any indexed tensor expression; v should be the name (without indices) of a vector field. For example:

(%i1) load(itensor);
(%o1)      /share/tensor/itensor.lisp
(%i2) ishow(liediff(v,a([i,j],[])*b([],[k],l)))$
       k    %2            %2          %2
(%t2) b   (v   a       + v   a     + v   a    )
       ,l       i j,%2    ,j  i %2    ,i  %2 j
                          %1  k        %1  k      %1  k
                      + (v   b      - b   v    + v   b   ) a
                              ,%1 l    ,l  ,%1    ,l  ,%1   i j
li SciMax Toolbox limit