Preprints
- S. Popa, Correspondences,
INCREST Preprint, 56/1986
- S.
Popa,
Classification of actions of discrete amenable groups on
amenable subfactors of type II,
IHES Preprint, 46/1992,
(N.B. The initial IHES preprint of this paper had
hundreds and hundreds of typos. I corrected that version only
in the Summer of 2009!! The above link takes you to this
updated, fully corrected version, see comments at the
end of the introduction.This version appeared in International Journal of
Mathematics in 2011, see item [86] in my Publications).
- S.
Popa,
Biduals associated to subfactors, hypertraces and
restrictions for the index, Preprint 1997
- S.
Popa,
Classification of hyperfinite subfactors with amenable
graph, Preprint 2000 (preliminary version)
- S. Popa, A rigidity result for
actions of property T groups by Bernoulli shifts, MSRI preprint No. 2001-005
January 2001 (N.B. This is the first version of the
paper Some
rigidity results for non-commutative Bernoulli shifts,
which appeared in J. Funct. Analysis, 230 (2006), 273-328.)
- S.
Popa, An example of a property Γ factor with
countable fundamental group, MSRI
preprint No. 2001-020 May 2001 (This paper was
never published, as all results it contained were improved
shortly after, in the MSRI preprint 2001-024 listed below)
- S.
Popa,
On a class of type II1 factors with Betti numbers
invariants, MSRI Preprint No. 2001-024. June 2001 (N.B. This is
the first version of the paper with the same title,
which appeared in Ann.Math. 163 (2006), 809-899.)
- S.
Popa,
Deformation and rigidity for group actions and von
Neumann algebras, ICMpopafinal.pdf
(N.B. This is the pdf file of my paper in Vol. 1 of the
Proceedings of the ICM Madrid, 2006).
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- Sorin Popa: On the classification of II_1
factors arising from free groups acting on spaces,
May 2013 (Expository paper for the Takagi Lectures: the
extended version to appear in Japanese Journal
of Mathematics).
- S. Popa: On the classification of
hyperfinite subfactors with amenable graph, preprint
2019.
- R. Boutonnet and S. Popa: Maximal
amenable MASAs of radial type in the free group factors,
arXiv:2302.13355 to appear in Proc. AMS
- P. Hiatt, J. Peterson, S. Popa: Some
classes of smooth bimodules over II_1 factors and
their associated 1-cohomology spaces, to
appear in Journal of Functional Analysis, arXiv:2304.06242
- P.
Hiatt and S. Popa: On the
singular abelian rank of a II$_1$ factor, to
appear in Journal of Operator Theory, arxiv:2402.18559