arXiv · math/0601408
We study L^2-Betti numbers for von Neumann algebras, as defined by D. Shlyakhtenko and A. Connes, in the presence of a bi-finite correspondence and prove a proportionality formula.
Andreas Thom. 2006-03-13. L^2-Betti numbers for subfactors. https://arxiv.org/abs/math/0601408
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