# Complex anaylsis, winding number question.

by screwyshrew
Tags: anaylsis, complex, number, winding
 P: 2 So the in the equation for the winding number/index of a curve I($\gamma$, z) = $\frac{1}{2i\pi}$ $\int\gamma \frac{1}{ζ-z}dζ$ where $\gamma$ : [a, b] → ℂ and z is an arbitrary point not on $\gamma$, what exactly does ζ represent?