{ "id": "2104.08138", "version": "v1", "published": "2021-04-16T14:37:00.000Z", "updated": "2021-04-16T14:37:00.000Z", "title": "It{ô}-F{ö}llmer Calculus in Banach Spaces I: The It{ô} Formula", "authors": [ "Yuki Hirai" ], "categories": [ "math.PR" ], "abstract": "We prove F{\\\"o}llmer's pathwise It{\\^o} formula for a Banach space-valued {\\cadlag} path. We also relax the assumption on the sequence of partitions along which we treat the quadratic variation of a path.", "revisions": [ { "version": "v1", "updated": "2021-04-16T14:37:00.000Z" } ], "analyses": { "subjects": [ "60H99", "60H05" ], "keywords": [ "banach spaces", "llmer calculus", "quadratic variation", "assumption" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }