English: A visual depiction of a vector X on a domain being multiplied by a complex number z, then mapped by f, versus being mapped by f *then* being multiplied by z. 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
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Uploaded a work by *Cauchy-Riemann.png: Keenan Crane *vector version: Comrade-yutyo from {{Derived from|Cauchy-Riemann.png|display=50}} with UploadWizard