{ "id": "2003.10892", "version": "v1", "published": "2020-03-24T14:43:50.000Z", "updated": "2020-03-24T14:43:50.000Z", "title": "A new treatment of convex functions", "authors": [ "M. Sababheh", "S. Furuichi", "H. R. Moradi" ], "categories": [ "math.FA" ], "abstract": "Convex functions have played a major role in the field of Mathematical inequalities. In this paper, we introduce a new concept related to convexity, which proves better estimates when the function is somehow more convex than another. In particular, we define what we called $g-$convexity as a generalization of $\\log-$convexity. Then we prove that $g-$convex functions have better estimates in certain known inequalities like the Hermite-Hadard inequality, super additivity of convex functions, the Majorization inequality and some means inequalities. Strongly related to this, we define the index of convexity as a measure of ``how much the function is convex\". Applications including Hilbert space operators, matrices and entropies will be presented in the end.", "revisions": [ { "version": "v1", "updated": "2020-03-24T14:43:50.000Z" } ], "analyses": { "keywords": [ "convex functions", "better estimates", "hilbert space operators", "super additivity", "major role" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }