sigma notation

bitttttor

What does this mean? (see attachment)

"Where b is a block defined by the contiguity condition c that may exist between elements of s, and n is the number of elements in that block"

I know is not possible to get a solution without the actual function, but how does this reads?

HallsofIvy

That notation is a little ambiguous. Just
[tex]\sum_{c\in S} f(c)[/tex]
would mean "caclulate f(c) for all c contained in set S, then add". But the "n" is problematic- the set S, in general, doesn't even have to be a set of numbers.

My best guest would be "calculate f(c) for all c contained in set S, that are less than or equal to n, then add them."

bitttttor

Great, thank you.

NascentOxygen

bitttttor, are you able to say more about the background to this? In what context did you find it?

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bitttttor	sigma notation Tweet What does this mean? (see attachment) "Where b is a block defined by the contiguity condition c that may exist between elements of s, and n is the number of elements in that block" I know is not possible to get a solution without the actual function, but how does this reads? Attached Thumbnails

HallsofIvy Recognitions: Gold Member Science Advisor Staff Emeritus	That notation is a little ambiguous. Just [tex]\sum_{c\in S} f(c)[/tex] would mean "caclulate f(c) for all c contained in set S, then add". But the "n" is problematic- the set S, in general, doesn't even have to be a set of numbers. My best guest would be "calculate f(c) for all c contained in set S, that are less than or equal to n, then add them."

NascentOxygen Recognitions: Homework Help	sigma notation bitttttor, are you able to say more about the background to this? In what context did you find it?