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I foten struggle with understanding some of the mathematics written down in papers. This stuggle is often due to notation used. Therefore, I was wondering whether somebody is aware of a resource that explains how read the formulas. I am talking about signs like: ∑, y||2 and some others.

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A good start. – JavaMan May 8 '13 at 6:17
@Jochem To the right you can find, under the $\text{Related}$ tab, similar questions which might be useful. – Git Gud May 8 '13 at 6:30

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