{ "id": "2010.07752", "version": "v1", "published": "2020-10-15T13:51:46.000Z", "updated": "2020-10-15T13:51:46.000Z", "title": "A density property for stochastic processes", "authors": [ "Riccardo Passeggeri" ], "comment": "16 pages", "categories": [ "math.PR" ], "abstract": "Consider a class of probability distributions which is dense in the space of all probability distributions on $\\mathbb{R}^{d}$ with respect to weak convergence, for every $d\\in\\mathbb{N}$. Then, we construct various explicit classes of continuous (c\\'{a}dl\\'{a}g) processes which are dense in the space of all continuous (c\\'{a}dl\\'{a}g) processes with respect to convergence in distribution. This is motivated by the recent result that quasi-infinitely divisible (QID) distributions are dense when $d=1$. If this result is extended to any $d\\in\\mathbb{N}$, then our result will imply that QID processes are dense in both spaces of continuous and c\\'{a}dl\\'{a}g processes.", "revisions": [ { "version": "v1", "updated": "2020-10-15T13:51:46.000Z" } ], "analyses": { "keywords": [ "stochastic processes", "density property", "probability distributions", "qid processes", "weak convergence" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable" } } }