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.
Categories: math.FA