{ "id": "1801.07334", "version": "v1", "published": "2018-01-22T21:54:04.000Z", "updated": "2018-01-22T21:54:04.000Z", "title": "On spherical codes with inner products in a prescribed interval", "authors": [ "P. G. Boyvalenkov", "P. D. Dragnev", "D. P. Hardin", "E. B. Saff", "M. M. Stoyanova" ], "comment": "18 pages, 1 figure", "categories": [ "math.MG" ], "abstract": "We develop a framework for obtaining linear programming bounds for spherical codes whose inner products belong to a prescribed subinterval $[\\ell,s]$ of $[-1,1)$. An intricate relationship between Levenshtein-type upper bounds on cardinality of codes with inner products in $[\\ell,s]$ and lower bounds on the potential energy (for absolutely monotone interactions) for codes with inner products in $[\\ell,1)$ (when the cardinality of the code is kept fixed) is revealed and explained. Thereby, we obtain a new extension of Levenshtein bounds for such codes. The universality of our bounds is exhibited by a unified derivation and their validity for a wide range of codes and potential functions.", "revisions": [ { "version": "v1", "updated": "2018-01-22T21:54:04.000Z" } ], "analyses": { "subjects": [ "94B65", "52A40", "74G65" ], "keywords": [ "spherical codes", "prescribed interval", "inner products belong", "levenshtein-type upper bounds", "potential functions" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }