{ "id": "1812.00167", "version": "v1", "published": "2018-12-01T07:36:34.000Z", "updated": "2018-12-01T07:36:34.000Z", "title": "The operator--valued parallelism and norm-parallelism in matrices", "authors": [ "M. Mohammadi Gohari", "M. Amyari" ], "categories": [ "math.FA" ], "abstract": "Let $\\mathcal{H}$ be a Hilbert space, and let $K(\\mathcal{H})$ be the $C^*$-algebra of compact operators on $\\mathcal{H}$. In this paper, we present some characterizations of the norm-parallelism for elements of a Hilbert $K(\\mathcal{H})$-module by employing the Birkhoff--James orthogonality. Among other things, we present a characterization of transitive relation of the norm-parallelism for elements in a certain Hilbert $K(\\mathcal{H})$-module. We also give some characterizations of the Schatten $p$-norms and the operator norm-parallelism for matrices.", "revisions": [ { "version": "v1", "updated": "2018-12-01T07:36:34.000Z" } ], "analyses": { "subjects": [ "46L08", "47A30", "47B10", "47B47" ], "keywords": [ "operator-valued parallelism", "characterization", "operator norm-parallelism", "birkhoff-james orthogonality", "compact operators" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }