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Macaulay2Doc :: sum(VisibleList,VisibleList,Function)

sum(VisibleList,VisibleList,Function) -- sum results of applying a function pairwise

Synopsis

Description

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