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Results tagged with list-manipulation
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user 13913
Questions on the manipulation of List objects in Mathematica, and the functions used for these manipulations.
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Ordered indices of a multiple product or sum
Given a summation like
$$\sum_{1 \leq i_1 < i_2 < \dotsc < i_k \leq n} f(i_1, i_2, \dotsc , i_k)$$
how can the lists of indices be enumerated?
For example, if $n=4$ then the possible lists of indic …
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