Dear all,
I have some questions about summation. I am reading some codes about maxima
What does " map(x->sum(sum(x,j,0,k),i,0,m), f(m+n+2*i,2*i+2*k+1-2*j)); "
mean? Here f( , ) is a polynomial. " -> " is defined as " (arg ->
form)::=buildq([arg,form],lambda([arg],form)) ". It is very strange since
it seems that the summation is over x.
Is " map(x->sum(sum(x,j,0,k),i,0,m), f(m+n+2*i,2*i+2*k+1-2*j)); " the same
as " sum(sum(f(m+n+2*i,2*i+2*k+1-2*j), j, 0, k), i, 0, m) "? Maybe the they
are not the same because I changed the codes to "
sum(sum(f(m+n+2*i,2*i+2*k+1-2*j), j, 0, k), i, 0, m) ", then the answer is
different.
Thank you very much.
Best wishes,
Jianrong.