Gaston Julia1893–1978
Complex iteration
Mathematician whose work on iterated rational functions helped establish complex dynamics and the fractal sets now named after him.
Julia Filigree
Twin curls, branching islands and finely engraved edges emerge from a single complex number. Nested contours trace their changing silhouette.
About this pattern
Gaston Julia and Pierre Fatou · quadratic complex dynamics
Contours of the smooth escape-time field for z → z² + c. The two shape controls set the real and imaginary parts of c. Motion follows a small closed path around the chosen parameter; some settings cross between connected and disconnected Julia sets.
Behind the mathematics
Pierre Fatou1878–1929
Complex dynamics
Mathematician who independently developed foundational results on iteration in the complex plane, alongside the work of Gaston Julia.