2 citations · 3 across the 8 of their papers we have counts for
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Graphs of operators as points in the Grassmann manifold
Esteban Andruchow, Lazaro Recht, Alejandro Varela
We study the set of graphs of closed, densely defined operators in a Hilbert space , regarded as a subset of the Grassmann manifold of orthogonal projections…
Conjugate points in the Grassmann manifold of a -algebra
Esteban Andruchow, Gabriel Larotonda, Lázaro Recht
Let be a component of the Grassmann manifold of a -algebra, presented as the unitary orbit of a given orthogonal projection . There are several natural connecti…
A non commutative Kähler structure on the Poincaré disk of a C*-algebra
Esteban Andruchow, Gustavo Corach, Lázaro Recht
We study the Poincaré disk $\d=\{z\in\a: \|z\|<1\}$ of a C-algebra $\a$ as a homogeneous space under the action of an appropriate Banach-Lie group of matric…
Supports for minimal hermitian matrices
Alberto Mendoza, Lázaro Recht, Alejandro Varela
We study certain pairs of subspaces and of we call supports that consist of eigenspaces of the eigenvalues of a minimal hermitian matrix ($\|M…
Projections with fixed difference: a Hopf-Rinow theorem
Esteban Andruchow, Gustavo Corach, Lázaro Recht
The set , of pairs of orthogonal projections in generic position with fixed difference , is shown to be a homogeneus smooth manifold: it is the quotient o…