{ "id": "2110.15837", "version": "v2", "published": "2021-10-29T15:00:15.000Z", "updated": "2022-01-18T15:51:45.000Z", "title": "Self-conjugate $t$-core partitions and applications", "authors": [ "Madeline Locus Dawsey", "Benjamin Sharp" ], "comment": "15 pages, accepted for publication in Australasian Journal of Combinatorics", "journal": "Australas. J. Combin. 82(2) (2022), 212--227", "categories": [ "math.CO", "math.NT" ], "abstract": "Partition theory abounds with bijections between different types of partitions. One of the most famous partition bijections maps each self-conjugate partition of a positive integer $n$ to a partition of $n$ into distinct odd parts, and vice versa. Here we prove new necessary and sufficient conditions for a self-conjugate partition to be $t$-core, in terms of only the parts of the corresponding partition into distinct odd parts, by proving a new hook length formula. Corollaries of these results include new applications of $t$-core self-conjugate partitions to subsets of the natural numbers, due to the recent investigation of a new partition statistic called the supernorm by the first author, Just, and Schneider, as well as many results on $t$-cores by Bringmann, Kane, Males, Ono, Raji, and others. We provide several examples of these applications, one of which gives a new formula for certain families of Hurwitz class numbers.", "revisions": [ { "version": "v2", "updated": "2022-01-18T15:51:45.000Z" } ], "analyses": { "subjects": [ "05A17", "11P81", "11P99", "11E41" ], "keywords": [ "core partitions", "distinct odd parts", "applications", "core self-conjugate partitions", "hurwitz class numbers" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }