Abstract
A real, rational function determines an argument function , whose increment relates the numbers of distinct, real zeros and poles of . The present expository note derives such a result, and explains its relevance to the index for a certain class of planar singularities.
Citation
Joel Langer. "AN ARGUMENT PRINCIPLE FOR REAL FUNCTIONS AND NONHARMONIC SINGULARITIES IN THE PLANE." Rocky Mountain J. Math. 54 (4) 1131 - 1139, August 2024. https://doi.org/10.1216/rmj.2024.54.1131
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