Build nested sumsym expression

2018 10 19
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更新时间：2018 10 19
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Hi all,
i'm tryng to write down this formula(cattura.png).
The point is the nested sum of series.
I actually have written this:
x = symsum(1/(16^k)*symsum(symsum(symsum( obj.I(theta, k+level,y+(i/2^k),x+(j/2^k)), y,0,2), x,0,1), theta,1,3), k, 0, 3-level);
but i got an error on K...

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madhan ravi
madhan ravi 2018-10-19
What’s 3-level?
Marco Strambelli
Marco Strambelli 2018-10-19
编辑：Marco Strambelli 2018-10-19
Sorry i forgot to mention some details:
level (in the image is "l"), "i", "j" are function's parameter.
"i","j" are indeces on matrix, "level" or "l" tells me which matrix I have to use (I have 3 different matrix).

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