1 citations · 1 across the 1 of their papers we have counts for
5 papers
On -parallelism and -Birkhoff-James orthogonality of operators
Tamara Bottazzi, Cristian Conde, Kais Feki
In this paper, we establish several characterizations of the -parallelism of bounded linear operators with respect to the seminorm induced by a positive operator acting on a…
Generalized numerical radius and related inequalities
Tamara Bottazzi, Cristian Conde
They proved several properties and introduced some inequalities. We continue with the study of this generalized numerical radius and we develop diverse inequalities involving w_N.…
Geodesic neighborhoods in unitary orbits of self-adjoint operators of K+C
Tamara Bottazzi, Alejandro Varela
We study the unitary orbit of a compact Hermitian diagonal operator with spectral multiplicity one under the action of the unitary group U_(K+C) of the unitization of the compact o…
Minimal length curves in unitary orbits of a Hermitian compact operator
Tamara Bottazzi, Alejandro Varela
We study some examples of minimal length curves in homogeneous spaces of B(H) under a left action of a unitary group. Recent results relate these curves with the existence of minim…
Best approximation by diagonal compact operators
Tamara Bottazzi, Alejandro Varela
We study the existence and characterization properties of compact Hermitian operators C on a separable Hilbert space H such that ||C|| is less or equal than || C + D ||, for all D…