What is the meaning of the integral notation with a circle in the middle?

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The integral notation with a circle in the middle, represented as \oint, indicates a line integral over a closed curve. This notation is commonly used in vector calculus to calculate the integral of a function along a closed path. It is often encountered in physics, particularly in the context of work done by a force field. The discussion highlights a lack of clear resources on this notation in standard calculus materials. Understanding this notation is essential for applications in advanced mathematics and physics.
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I can't find a description for the Integral notation with a circle in the middle and sometimes a letter in it I think. I do not see any mention of it on wikipedia or in my calc classes. There it is ----> \oint :bugeye:
 
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