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A modified muller routine for finding the zeroes of a non-analytic complex function

Authors
Journal
Journal of Computational Physics
0021-9991
Publisher
Elsevier
Publication Date
Volume
53
Issue
3
Identifiers
DOI: 10.1016/0021-9991(84)90076-7

Abstract

Abstract A simple modification to the Muller zero-finding routine for complex functions is described which allows the finding of zeroes of complex non-analytic functions. This is particularly useful for the problem of finding all the images produced by a complicated gravitational lens configuration as described here, where it is important not to miss any of the zeroes.

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