{ "id": "2107.09149", "version": "v1", "published": "2021-07-19T20:51:54.000Z", "updated": "2021-07-19T20:51:54.000Z", "title": "On the generating function for intervals in Young's lattice", "authors": [ "Faqruddin Azam", "Edward Richmond" ], "comment": "18 pages, 1 table", "categories": [ "math.CO" ], "abstract": "In this paper, we study a family of generating functions whose coefficients are polynomials that enumerate partitions in lower order ideals of Young's lattice. Our main result is that this family satisfies a rational recursion and are therefore rational functions. As an application, we calculate the asymptotic behavior of the cardinality of lower order ideals for the ``average\" partition of fixed length and give a homological interpretation of this result in relation to Grassmannians and their Schubert varieties.", "revisions": [ { "version": "v1", "updated": "2021-07-19T20:51:54.000Z" } ], "analyses": { "subjects": [ "05A17", "14M15" ], "keywords": [ "youngs lattice", "generating function", "lower order ideals", "main result", "enumerate partitions" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }