{ "id": "0707.0237", "version": "v2", "published": "2007-07-02T19:58:05.000Z", "updated": "2007-08-14T19:31:12.000Z", "title": "The number of imaginary quadratic fields with a given class number", "authors": [ "K. Soundararajan" ], "comment": "6 pages; Version 2 has some light changes", "categories": [ "math.NT" ], "abstract": "We investigate the number ${\\Cal F}(h)$ of imaginary quadratic fields with class number $h$. We establish an asymptotic formula for the average value of ${\\Cal F}(h)$. We also establish a modest non-trivial upper bound for ${\\Cal F}(h)$ and give an application to a question of Rosen and Silverman on the odd part of the class number. Finally, we speculate on the asymptotic nature of ${\\Cal F}(h)$.", "revisions": [ { "version": "v2", "updated": "2007-08-14T19:31:12.000Z" } ], "analyses": { "keywords": [ "imaginary quadratic fields", "class number", "modest non-trivial upper bound", "asymptotic formula", "average value" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007arXiv0707.0237S" } } }