{ "id": "1701.03901", "version": "v1", "published": "2017-01-14T10:51:56.000Z", "updated": "2017-01-14T10:51:56.000Z", "title": "Systems of cubic forms in many variables", "authors": [ "Simon L. Rydin Myerson" ], "comment": "23 pages, submitted", "categories": [ "math.NT" ], "abstract": "We consider a system of $R$ cubic forms in $n$ variables, with integer coefficients, which define a smooth complete intersection in projective space. Provided $n\\geq 25R$, we prove an asymptotic formula for the number of integer points in an expanding box at which these forms simultaneously vanish. In particular we can handle systems of forms in $O(R)$ variables, previous work having required that $n \\gg R^2$. One conjectures that $n \\geq 6R+1$ should be sufficient. We reduce the problem to an upper bound for the number of solutions to a certain auxiliary inequality. To prove this bound we adapt a method of Davenport.", "revisions": [ { "version": "v1", "updated": "2017-01-14T10:51:56.000Z" } ], "analyses": { "subjects": [ "11D45", "11D72", "11G35", "14G05" ], "keywords": [ "cubic forms", "smooth complete intersection", "integer coefficients", "auxiliary inequality", "upper bound" ], "note": { "typesetting": "TeX", "pages": 23, "language": "en", "license": "arXiv", "status": "editable" } } }