This (free) educational project has been created by Laurin Gschnitzer (15 years of age).
MathematicsComplex

Cauchy Integral Formula

f(a) = (1/2πi) ∮ f(z)/(z−a) dz

Values of a holomorphic function inside a contour follow from its values on the contour.

More detailed explanations, examples and illustrations for this entry are coming soon.