Category MA P24 Converging Logarithmic Spirals on the Complex Plane

Abstract The iteration of the logarithmic function on a complex number is rather

complicated to calculate by hand; however, using computer programs to

mathematically simplify the logarithmic operations gives us data that

suggests that iterating the logarithmic function on any complex number will

eventually reach a unique limit no matter what the initial inputted value is.

My project revolves around giving a rigorous mathematical proof to explain

why this convergence occurs. Manipulating common equations in Complex

Analysis and applying the Mean Value Theorem on the complex plane

shows not only that the limit does exist but also shows that continuously

taking the logarithm of a number, real or complex, will showcase a function

that converges to the limit at a constant rate. Furthermore, collecting data

using mathematical software supports the proof with hard data. Graphing

the data points on the complex plane, we see that the function creates a

spiral that has interesting properties on its own. With these new constants

we can find new equilibriums in areas applying complex logarithms such

as quantum mechanics, computer science, and electrical engineering.

Thus, this research gives an interesting proof for a unique mathematical

phenomenon in which potential real-world application may lie.

Bibliography Introduction to Complex Analysis by Rolf Nevanlinna and Veikko Paatero


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