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  • Transitive Families of Proj...
    BANNON, Jon P

    Proceedings of the American Mathematical Society, 03/2005, Volume: 133, Issue: 3
    Journal Article

    We introduce a notion of transitive family of subspaces relative to a type II1factor, and hence a notion of transitive family of projections in such a factor. We show that whenever M is a factor of type II1and M is generated by two self-adjoint elements, then$\mathcal{M} \otimes M_{2}(\mathbb{C})$contains a transitive family of 5 projections. Finally, we exhibit a free transitive family of 12 projections that generate a factor of type II1.