4 citations · 7 across the 4 of their papers we have counts for
6 papers
A note on the geometry of certain classes of linear operators
Diogo Diniz, Anselmo Raposo
In this note we introduce a new technique to answer an issue posed in [7] concerning geometric properties of the set of non-surjective linear operators. We also extend and improve…
Superinvolutions on block-triangular matrix algebras
Laise Dias, Diogo Diniz, Alex Ramos
In this paper we classify, up to isomorphism, the superinvolutions on algebras of upper block-triangular matrices over an algebraically closed field of characteristic different fro…
Spaceability of the sets of surjective and injective operators between sequence spaces
Diogo Diniz, Vinícius Fávaro, Daniel Pellegrino +1
We investigate algebraic structures within sets of surjective and injective linear operators between sequence spaces, completing results of Aron et al.
On the Number of Gradings on Matrix Algebras
Diogo Diniz, Daniel Pellegrino
We determine the number of isomorphism classes of elementary gradings by a finite group on an algebra of upper block-triangular matrices. As a consequence we prove that, for a fini…
A note on lineability
G. Botelho, D. Diniz, D. Pellegrino +1
In this note we answer a question concerning lineability of the set of non-absolutely summing operators.
Lineability of the set of bounded linear non-absolutely summing operators
G. Botelho, D. Diniz, D. Pellegrino
In this note we solve, except for extremely pathological cases, a question posed by Puglisi and Seoane-Sepulveda on the lineability of the set of bounded non-absolutely summing lin…