If there is a nested summation with n layers, each layer having the same starting and ending value as every other layer, and the innermost layer containing some expression, how would I express this nested summation without expressing every individual layer of the nested summation?
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You mean something like this? $$\sum_{x_1=a}^b \sum_{x_2=a}^b ... \sum_{x_n=a}^b f(x_1,x_2,...,x_n)$$? – Franklin Pezzuti Dyer Jul 27 '17 at 21:09
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Yes I mean something like that. – Anders Gustafson Jul 27 '17 at 21:27
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Then Fimpellizieri's answer is correct. – Franklin Pezzuti Dyer Jul 27 '17 at 21:29
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Write it as follows $$\sum_{k_1=a}^b\,\sum_{k_2=a}^b\,\dots\,\sum_{k_n=a}^b\,=\sum_{a\,\leq\, k_1,\,k_2,\,\dots,\,k_n\leq\, b}$$
Fimpellizzeri
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