How do i add elements from subsets?

Question:How do i add elements from subsets?

Posted: ContrapuntoBrowniano 40 Product: Maple 18

May 04 2022

Hi! I've got a set of subsets S with A_ibeing the i-subset. I need to sum up all the x's in all the A_i's. How can this be achieved?

(ex):

sum( { {a, b, c}, {a, b, d} } )= 2a+2b+c+d

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