This article is about "path integrals" in the general mathematical sense, and not the path integral formulation of physics which was studied by Richard Feynman.

In mathematics, a path integral (also known as a line integral) is an integral where the function to be integrated is evaluated along a path or curve. Various different path integrals are in use. In the case of a closed path it is also called a contour integral.

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	PlanetMath: path integral (374 words) The path integral is a generalization of the integral that is very useful in theoretical and applied physics. A directed path integral on a closed path is denoted by summa and a circle with an arrow denoting direction. This is version 12 of path integral, born on 2002-02-03, modified 2004-09-10.
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