Template:Big Sigma

Σ

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From Summation.

Without {{math}}

Mathematical notation uses a symbol that compactly represents summation of many similar terms: the summation symbol, Σ, an enlarged form of the upright capital Greek letter sigma. This is defined as

nΣi = m a_i = a_m + a_{m + 1} + a_{m + 2} + ... + a_{n - 1} + a_n

where i is the index of summation; a_i is an indexed variable representing each term of the sum; m is the lower bound of summation, and n is the upper bound of summation.

With {{math}}

Mathematical notation uses a symbol that compactly represents summation of many similar terms: the summation symbol, Σ, an enlarged form of the upright capital Greek letter sigma. This is defined as

nΣi = m a_i = a_m + a_{m + 1} + a_{m + 2} + ... + a_{n - 1} + a_n

where i is the index of summation; a_i is an indexed variable representing each term of the sum; m is the lower bound of summation, and n is the upper bound of summation.

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