sum({...},{...},Function) -- sum results of applying a function pairwise

sum({...},{...},Function) -- sum results of applying a function pairwise

Synopsis:

Function: sum -- compute the sum

Input:

an instance of class List.

an instance of class Function.

sum(v,w,f) -- yields the sum of the results obtained by applying f to each of the pairs (i,j) of elements from the lists or sequences v and w, which should be of the same length.

i1 : R = ZZ[x,y,z];

i2 : sum({2,3,4},{x,y,z},(i,j)->j^i)



      4    3    2

o2 = z  + y  + x



o2 : R

See also:

sum -- compute the sum

Code:

     -- ../../../Macaulay2/m2/lists.m2:70
     sum(List, List, Function) := (v,w,f) -> sum(apply(v,w,identity),f)