Question: Maple makes sum of procedure values zero

Hello,

 

I am doing some complicated computations in Maple, and I noticed something was wrong. For some reason, Maple makes the sum of 1 a zero, although he knows that it is a 1.

this is the code:

this is the output:

                               1
                               0
(I reduced the original problem, so I hope that this is the only problem I have)

Can anyone help? Thanks!

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