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(mathematics) The branch of mathematics that studies holomorphic functions.

A rectangular grid (top) and its image under a conformal map ${\displaystyle f}$ (bottom). It is seen that ${\displaystyle f}$ maps pairs of lines intersecting at 90° to pairs of curves still intersecting at 90°.

(mathematics) The branch of mathematics that studies holomorphic functions.

Color wheel graph of the function f(x) = ⁠(x² − 1)(x − 2 − i)²/x² + 2 + 2i⁠. Hue represents the argument, brightness the magnitude.