1 citations · 3 across the 6 of their papers we have counts for
13 papers
Best approximants relative to a C-subalgebra, joint numerical range and subdifferentials
Tamara Bottazzi, Alejandro Varela
We study the minimality of Hermitian matrices respect to a -subalgebra of in the spectral norm, that is \[\|A\|\leq \|A+B\|,\ \…
Semi-inner product and angles in Schatten ideals
Tamara Bottazzi, Cristian Conde
In this paper, we investigate the Schatten -class ideals for as semi-inner product spaces in the sense of Giles and Lumer. Within this framework, we explore several geome…
Minimal compact operators, subdifferential of the maximum eigenvalue and semi-definite programming
Tamara Bottazzi, Alejandro Varela
We formulate the issue of minimality of self-adjoint operators on a Hilbert space as a semi-definite problem, linking the work by Overton in [1] to the characterization of minimal…
Generalized Buzano Inequality
Tamara Bottazzi, Cristian Conde
If is an orthogonal projection defined on an inner product space , then the inequality …
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.…