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math.CV2021
One Parameter Semigroups in Two Complex Variables
Michael R. Pilla
For self maps of the disk, it can be shown that under the right conditions one can embed a discrete iteration of the map into a continuous semigroup. In this article we extend thes…
math.CV2021
A Generalized Cross Ratio
Michael R. Pilla
In one complex variable, the cross ratio is a well-known quantity associated with four given points in the complex plane that remains invariant under linear fractional maps. In par…