{ "id": "2012.09492", "version": "v1", "published": "2020-12-17T10:33:13.000Z", "updated": "2020-12-17T10:33:13.000Z", "title": "Stability of diametral diameter two properties", "authors": [ "Johann Langemets", "Katriin Pirk" ], "comment": "14 pages", "categories": [ "math.FA" ], "abstract": "We prove that the diametral diameter two properties are inherited by $F$-ideals (e.g., $M$-ideals). On the other hand, these properties are lifted from an $M$-ideal to the superspace under strong geometric assumptions. We also show that all of the diametral diameter two properties are stable under the formation of corresponding K\\\"othe-Bochner spaces (e.g., $L_p$-Bochner spaces). Finally, we investigate when the projective tensor product of two Banach spaces has some diametral diameter two property.", "revisions": [ { "version": "v1", "updated": "2020-12-17T10:33:13.000Z" } ], "analyses": { "subjects": [ "46B04", "46B20", "46B22", "46B42" ], "keywords": [ "diametral diameter", "strong geometric assumptions", "bochner spaces", "projective tensor product", "banach spaces" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable" } } }