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Cauchy–Riemann equations

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Also known as d'Alembert–Euler conditions, Cauchy–Riemann conditions

system of linear partial differential equations characterizing holomorphic (complex differentiable) functions

Wikidata facts

Named after
Bernhard Riemann
Image
Cauchy-Riemann.svg
Show 3 more facts
discoverer or inventor
Jean Le Rond d'Alembert
time of discovery or invention
1752-00-00
maintained by WikiProject
WikiProject Mathematics
Sources (3)

via Wikidata · CC0

~29 min read

Encyclopedic overview

A visual depiction of a vector X in a domain being multiplied by a complex number z, then mapped by df, versus being mapped by df then being multiplied by z afterwards. If both of these result in the point ending up in the same place for all X and z, then f satisfies the Cauchy–Riemann condition at the basepoint.

In mathematics, the Cauchy–Riemann equations are two partial differential equations that characterize differentiability of complex functions. The equations are

Excerpted from Wikipedia’s “Cauchy–Riemann equations” article, available under the CC BY-SA 4.0 licence.