{ "id": "1806.00521", "version": "v1", "published": "2018-06-01T19:45:21.000Z", "updated": "2018-06-01T19:45:21.000Z", "title": "The lemniscate tree of a random polynomial", "authors": [ "Michael Epstein", "Boris Hanin", "Erik Lundberg" ], "comment": "18 pages, 6 figures", "categories": [ "math.PR", "math.CO", "math.CV" ], "abstract": "To each generic complex polynomial $p(z)$ there is associated a labeled binary tree (here referred to as a \"lemniscate tree\") that encodes the topological type of the graph of $|p(z)|$. The branching structure of the lemniscate tree is determined by the configuration (i.e., arrangement in the plane) of the singular components of those level sets $|p(z)|=t$ passing through a critical point. In this paper, we address the question \"How many branches appear in a typical lemniscate tree?\" We answer this question first for a lemniscate tree sampled uniformly from the combinatorial class and second for the lemniscate tree arising from a random polynomial generated by i.i.d. zeros. From a more general perspective, these results take a first step toward a probabilistic treatment (within a specialized setting) of Arnold's program of enumerating algebraic Morse functions.", "revisions": [ { "version": "v1", "updated": "2018-06-01T19:45:21.000Z" } ], "analyses": { "subjects": [ "30C15", "60G60", "31A15", "14P25", "05A15", "60C05", "60F05" ], "keywords": [ "random polynomial", "generic complex polynomial", "enumerating algebraic morse functions", "labeled binary tree", "arnolds program" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }