What does the notation |x,y| mean in analysis?

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Homework Statement



In analysis what does |x,y| mean/represent?

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coverband said:

Homework Statement



In analysis what does |x,y| mean/represent?

Without any context it's hard to tell, but it might mean the norm or absolute value of the inner product of x and y. Many texts represent the inner product as <x, y> or as (x, y).