World's Best Scientists 2026 revealed!

D-Index & Metrics

Mathematics

D-Index
45
Citations
9762
World Ranking
1454
National Ranking
640

Sorin Popa publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where Sorin Popa sits on this spectrum.

42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 82 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientists 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientists 522–526 publications: 3 scientists 527–531 publications: 1 scientists 532–536 publications: 4 scientists 537+ publications: 100 scientists
42 publications 537+

This scientist: 128 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

Sorin Popa D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where Sorin Popa sits on this spectrum.

30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 137 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 45 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

Research.com Recognitions

  • 2013 - Fellow of the American Mathematical Society
  • 2013 - Fellow of the American Academy of Arts and Sciences
  • 1995 - Fellow of John Simon Guggenheim Memorial Foundation

Overview

Sorin Popa is affiliated with the University of California, Los Angeles, in the United States. Their research primarily spans the field of Mathematics, with a focus on several subfields including Mathematical Physics, Algebra and Number Theory, Geometry and Topology, Statistics and Probability, and Electronic, Optical and Magnetic Materials.

The main topics of their work include advanced studies in operator algebras, algebra, topology, and Banach space theory. Specifically, these topics are:

  • Advanced Operator Algebra Research
  • Advanced Topics in Algebra
  • Algebraic structures and combinatorial models
  • Geometric and Algebraic Topology
  • Homotopy and Cohomology in Algebraic Topology
  • Advanced Banach Space Theory
  • Random Matrices and Applications

Sorin Popa has published extensively, with a total of 55 works in Mathematics. Their papers frequently appear in the following venues:

  • arXiv (Cornell University)
  • Communications in Mathematical Physics
  • Journal of Operator Theory
  • Annales Scientifiques de l École Normale Supérieure
  • Lirias (KU Leuven)

Recent papers include:

  • "W*-Rigidity Paradigms for Embeddings of II₁ Factors" (2022, Communications in Mathematical Physics)
  • "On the vanishing cohomology problem for cocycle actions of groups on II₁ factors" (2021, Annales Scientifiques de l École Normale Supérieure)
  • "Classification of regular subalgebras of the hyperfinite II₁ factor" (2020, Lirias (KU Leuven))
  • "Coarse decomposition of II1 factors" (2021, Duke Mathematical Journal)
  • "On Ergodic Embeddings of Factors" (2020, Communications in Mathematical Physics)

Frequent coauthors include:

  • Stefaan Vaes
  • Patrick Hiatt
  • Dimitri Shlyakhtenko
  • Rémi Boutonnet
  • Daniel Drimbe

Sorin Popa has received several recognitions throughout their career, including:

  • Fellow of the American Mathematical Society, 2013
  • Fellow of the American Academy of Arts and Sciences, 2013
  • Fellow of John Simon Guggenheim Memorial Foundation, 1995

Best Publications

  • Entropy and index for subfactors

    Mihai Pimsner;Sorin Popa

  • On a class of type $II_1$ factors with Betti numbers invariants

    Sorin Popa

  • Strong rigidity of II1 factors arising from malleable actions of w-rigid groups, II

    Sorin Popa

  • On a class of II1 factors with at most one Cartan subalgebra

    Narutaka Ozawa;Sorin Popa

  • Classification of amenable subfactors of type II

    Sorin Popa

  • On the superrigidity of malleable actions with spectral gap

    Sorin Popa

  • An axiomatization of the lattice of higher relative commutants of a subfactor

    Sorin Popa

  • Deformation and rigidity for group actions and von Neumann algebras

    Sorin Popa

  • Cocycle and orbit equivalence superrigidity for malleable actions of w-rigid groups

    Sorin Popa

  • Classification of subfactors: the reduction to commuting squares.

    S. Popa

  • On a Problem of R.V. Kadison on Maximal Abelian *-Subalgebras in Factors.

    Sorin Popa

  • Maximal injective subalgebras in factors associated with free groups

    Sorin Popa

  • Amalgamated free products of weakly rigid factors and calculation of their symmetry groups

    Adrian Ioana;Jesse Peterson;Sorin Popa

  • A Galois Correspondence for Compact Groups of Automorphisms of von Neumann Algebras with a Generalization to Kac Algebras

    Masaki Izumi;Roberto Longo;Sorin Popa

  • Unique Cartan decomposition for II1 factors arising from arbitrary actions of free groups

    Sorin Popa;Stefaan Vaes

  • Markov traces on universal Jones algebras and subfactors of finite index.

    Sorin Popa

  • Some rigidity results for non-commutative Bernoulli shifts☆

    Sorin Popa

  • Classification of subfactors and their endomorphisms

    Sorin Popa

  • Iterating the basic construction

    Mihai Pimsner;Sorin Popa

  • Unique Cartan decomposition for II_1 factors arising from arbitrary actions of hyperbolic groups

    Sorin Popa;Stefaan Vaes

  • Amalgamated Free Products of $w$-Rigid Factors and Calculation of their Symmetry Groups

    A. Ioana;J. Peterson;S. Popa

Frequent Co-Authors

Stefaan Vaes
Stefaan Vaes KU Leuven
Matilde Marcolli
Matilde Marcolli California Institute of Technology
Roberto Longo
Roberto Longo University of Rome Tor Vergata
Roger Smith
Roger Smith University of Newcastle Australia
Vaughan F. R. Jones
Vaughan F. R. Jones Vanderbilt University

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