Python calculation based on principle of argument (theory of functions of a complex variable)

Posted by dba477 on Mar 31, 2026 12:32 AM EDT
https://complexanalysys.blogspot.com; By Boris Derzhavets
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Principle of Argument doesn't provide any information about values of polynomial zeros inside predefined circle as well as locations of these zeros on complex plane. Classic math just says how many polynomial zeros we get inside given circle and nothing else. Library cxroots imported in python module provides object Circle having method roots to achieve the goal to get actual zeros values.

Areas of physics and engineering that require not only the number of zeros (roots) of a complex polynomial within a certain region, but their exact values as well, are typically those involving system stability analysis, resonant behavior, signal processing, and wave propagation. In these scenarios, the exact values determine system frequency, decay rates, and phase behavior.

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