{ "id": "1909.06924", "version": "v1", "published": "2019-09-16T01:24:24.000Z", "updated": "2019-09-16T01:24:24.000Z", "title": "A conjectural bound on the second Betti number for hyper-Kähler manifolds", "authors": [ "Yoon-Joo Kim", "Radu Laza" ], "comment": "8 pages; comments/feedback welcome", "categories": [ "math.AG" ], "abstract": "In previous work, we noted that the known cases of hyper-K\\\"ahler manifolds satisfy a natural condition on the LLV decomposition of the cohomology; informally, the Verbitsky component is the dominant representation in the LLV decomposition. Assuming this condition holds for all hyper-K\\\"ahler manifolds, we obtain an upper bound for the second Betti number in terms of the dimension.", "revisions": [ { "version": "v1", "updated": "2019-09-16T01:24:24.000Z" } ], "analyses": { "keywords": [ "second betti number", "hyper-kähler manifolds", "conjectural bound", "llv decomposition", "condition holds" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }