The axis in the complex plane corresponding to zero real part, ![R[z]=0](/https/mathworld.wolfram.com/images/equations/ImaginaryAxis/Inline1.svg)
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Imaginary Axis
See also
Complex Plane, Imaginary Line, Imaginary Part, Real AxisExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Imaginary Axis." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ImaginaryAxis.html