{ "id": "1601.07343", "version": "v1", "published": "2016-01-27T12:41:03.000Z", "updated": "2016-01-27T12:41:03.000Z", "title": "On extremal double circulant self-dual codes of lengths $90$ and $92$", "authors": [ "T. Aaron Gulliver", "Masaaki Harada" ], "comment": "10 pages", "categories": [ "math.CO" ], "abstract": "A classification of extremal double circulant self-dual codes of lengths up to $88$ is known. We demonstrate that there is no extremal double circulant self-dual code of length $90$. We give a classification of double circulant self-dual $[90,45,14]$ codes. In addition, we demonstrate that every double circulant self-dual $[90,45,14]$ code has no extremal self-dual neighbor of length $90$. Finally, we give a classification of extremal double circulant self-dual codes of length $92$.", "revisions": [ { "version": "v1", "updated": "2016-01-27T12:41:03.000Z" } ], "analyses": { "keywords": [ "extremal double circulant self-dual code", "extremal self-dual neighbor", "classification", "demonstrate" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2016arXiv160107343G" } } }