This is probably a dumb question but what does the circle through the integral sign mean?(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\oint[/tex]

I was thinking perhaps it could denote either the line integral over a closed curve, or the surface integral over a closed surface, depending on the context. But it seems the textbook I use employ that notation even when the line/surface integral is not over a closed curve/surface.

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# Homework Help: Maths notation

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