Geodesic
Property of the spatial projectivity in the class of CSL-algebras with atomic commutant
Fundamentalʹnaâ i prikladnaâ matematika, Tome 1 (1995) no. 1, pp. 147-159

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This work continues to study spatial homological properties of, generally speaking, non-selfadjoint, reflexive operator algebras in a Hilbert space $H$. A “lattice” criterion of spatial projectivity of an algebra $A$ (i.e. the projectivity of $H$ as left Banach $A$-module) is obtained in the class of indecomposable CSL-algebras: the existence of immediate predesessor of $H$ as element of the lattice of invariant subspaces. Also, the direct product of indecomposable CSL-algebras $A_\alpha$, $\alpha\in\Lambda$, is a spatial projective algebra iff the algebra $A_\alpha$ is spatial projective for every $\alpha$. 
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     author = {Yu. O. Golovin},
     title = {Property of the spatial projectivity in the class of {CSL-algebras} with atomic commutant},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
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Yu. O. Golovin. Property of the spatial projectivity in the class of CSL-algebras with atomic commutant. Fundamentalʹnaâ i prikladnaâ matematika, Tome 1 (1995) no. 1, pp. 147-159. http://geodesic.mathdoc.fr/item/FPM_1995_1_1_a6/