Summation by parts

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Notion

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Science and technology

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What Wikipedia says

In mathematics, summation by parts transforms the summation of products of sequences into other summations, often simplifying the computation or (especially) estimation of certain types of sums. It is also called Abel's lemma or Abel transformation, named after Niels Henrik Abel who introduced it in 1826.

Excerpt from the Wikipedia article “Summation by parts”, under the CC BY-SA 4.0 license. Read the article on Wikipedia