6 citations · 6 across the 5 of their papers we have counts for
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Oblique projections and Schur complements
G. Corach, A. Maestripieri, D. Stojanoff
Let H be a Hilbert space, L(H) the algebra of all bounded linear operators on H and <, >_A : H \times H \to C the bounded sesquilinear form induced by a selfadjoint A in L(H), < ξ,…
Projective space of a C*-module
E. Andruchow, G. Corach, D. Stojanoff
Let X be a right Hilbert C*-module over A. We study the geometry and the topology of the projective space P(X) of X, consisting of the orthocomplemented submodules of X which are g…
Polar decomposition under perturbations of the scalar product
G. Corach, A. Maestripieri, D. Stojanoff
Let A be a unital C* algebra with involution * represented in a Hilbert space H, G the group of invertible elements of A, U the unitary group of A, G^s the set of invertible selfad…
Projective spaces of a C*-algebra
E. Andruchow, G. Corach, D. Stojanoff
Based on the projective matrix spaces studied by B. Schwarz and A. Zaks, we study the notion of projective space associated to a C*-algebra A with a fixed projection p. The resulti…
Geometry of oblique projections
E. Andruchow, G. Corach, D. Stojanoff
Let A be a unital C*-algebra. Denote by P the space of selfadjoint projections of A. We study the relationship between P and the spaces of projections P_a determined by the differe…