{ "id": "math/0603461", "version": "v2", "published": "2006-03-19T21:35:02.000Z", "updated": "2006-06-17T21:29:10.000Z", "title": "A remark on two duality relations", "authors": [ "Emanuel Milman" ], "comment": "13 pages, typos corrected", "categories": [ "math.FA", "math.MG" ], "abstract": "We remark that an easy combination of two known results yields a positive answer, up to log(n) terms, to a duality conjecture that goes back to Pietsch. In particular, we show that for any two symmetric convex bodies K,T in R^n, denoting by N(K,T) the minimal number of translates of T needed to cover K, one has: N(K,T) <= N(T*,(C log(n))^{-1} K*)^{C log(n) loglog(n)}, where K*,T* are the polar bodies to K,T, respectively, and C > 1 is a universal constant. As a corollary, we observe a new duality result (up to log(n) terms) for Talagrand's \\gamma_p functionals.", "revisions": [ { "version": "v2", "updated": "2006-06-17T21:29:10.000Z" } ], "analyses": { "keywords": [ "duality relations", "symmetric convex bodies", "results yields", "duality conjecture", "minimal number" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......3461M" } } }