Common · Knowledge
Argument principle
Mathematical relationship
In complex analysis, the argument principle (or Cauchy's argument principle) is a theorem relating the difference between the number of zeros and poles of a meromorphic function to a contour integral of the function's logarithmic derivative.
From Wikipedia
In complex analysis, the argument principle (or Cauchy's argument principle) is a theorem relating the difference between the number of zeros and poles of a meromorphic function to a contour integral of the function's logarithmic derivative.
Text: Wikipédia, CC BY-SA 4.0. · Image: Archibald (Public domain) ·
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