World's Best Scientists 2026 revealed!

D-Index & Metrics

Mathematics

D-Index
37
Citations
5568
World Ranking
2512
National Ranking
19

Ruy Exel 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 Ruy Exel 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: 83 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: 106 publications — 14th percentile

14% of scientists in this discipline score the same or lower.

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

Ruy Exel 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 Ruy Exel 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: 138 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: 37 D-Index — 33rd percentile

33% 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

  • 2008 - Fellow, The World Academy of Sciences

Overview

Ruy Exel is affiliated with the Universidade Federal de Santa Catarina in Brazil, working primarily in the fields of Mathematics and Computer Science. Their research spans several specialized subfields including Mathematical Physics, Algebra and Number Theory, Computational Theory and Mathematics, Geometry and Topology, and Applied Mathematics.

The scientist's research topics cover various advanced aspects of algebra and operator theory, such as:

  • Advanced Operator Algebra Research
  • Advanced Topics in Algebra
  • Semigroups and Automata Theory
  • Advanced Algebra and Logic
  • Holomorphic and Operator Theory
  • Algebraic Structures and Combinatorial Models
  • Advanced Banach Space Theory

Their publication record includes contributions to a range of journals and venues, with frequent publications in:

  • arXiv (Cornell University)
  • Proceedings of the American Mathematical Society Series B
  • Proceedings of the American Mathematical Society
  • Bulletin of the London Mathematical Society
  • Semigroup Forum

Recent papers of Ruy Exel and collaborators are:

  • Exotic ideals in free transformation group C∗$C$-algebras, 2023, Bulletin of the London Mathematical Society
  • A remark on contracting inverse semigroups, 2023, Semigroup Forum
  • Corrigendum to "intermediate C*-algebras of Cartan embeddings", 2024, Proceedings of the American Mathematical Society Series B
  • Intermediate C*-algebras of Cartan embeddings, 2021, Proceedings of the American Mathematical Society Series B
  • Entropy for partial actions of ℤ, 2021, Proceedings of the American Mathematical Society

Frequent coauthors who have collaborated with Ruy Exel include:

  • David R. Pitts
  • Jonathan H. Brown
  • Adam H. Fuller
  • Sarah Reznikoff
  • Vrej Zarikian

The scientist has also contributed to academic book publications, with one notable title:

  • Characterizing Groupoid C*-algebras of Non-Hausdorff Étale Groupoids, published by Springer Nature in 2022

Among awards, Ruy Exel was recognized as a Fellow of The World Academy of Sciences in 2008.

Best Publications

  • Associativity of crossed products by partial actions, enveloping actions and partial representations

    M. Dokuchaev;Ruy Exel

  • Circle actions on C*-algebras, partial automorphisms, and a generalized Pimsner-Voiculescu exact sequence

    R. Exel

  • Inverse semigroups and combinatorial C*-algebras

    Ruy Exel

  • Partial actions of groups and actions of inverse semigroups

    Ruy Exel;Ruy Exel

  • Cuntz-Krieger algebras for infinite matrices

    R. Exel;M. Laca

  • Amenability for Fell bundles.

    Ruy Exel

  • Partial Dynamical Systems, Fell Bundles and Applications

    Ruy Exel

  • Twisted Partial Actions: A Classification of Regular C*-Algebraic Bundles

    R Exel

  • A new look at the crossed-product of a C^*-algebra by an endomorphism

    Ruy Exel

  • Morita equivalence for crossed products by Hilbert $C^st$-bimodules

    Beatriz Abadie;Beatriz Abadie;Søren Eilers;Ruy Exel

  • PARTIAL DYNAMICAL SYSTEMS AND C -ALGEBRAS GENERATED BY PARTIAL ISOMETRIES

    Ruy Exel;Marcelo Laca;John Quigg

  • Partial Representations and Partial Group Algebras

    Michael Dokuchaev;Ruy Exel;Paolo Piccione

  • C -Algebras of Irreversible Dynamical Systems

    R. Exel;A. Vershik

  • Invariants of almost commuting unitaries

    Ruy Exel;Terry A Loring

  • Reconstructing a totally disconnected groupoid from its ample semigroup

    Ruy Exel

  • FINITE-DIMENSIONAL REPRESENTATIONS OF FREE PRODUCT C*-ALGEBRAS

    Ruy Exel;Terry A. Loring

  • Partial Dynamical Systems and the KMS Condition

    Ruy Exel;Marcelo Laca

  • Dynamical systems associated to separated graphs, graph algebras, and paradoxical decompositions☆

    Pere Ara;Ruy Exel

  • Maximal Subdiagonal Algebras

    Ruy Exel

  • The soft torus and applications to almost commuting matrices

    Ruy Exel

  • Self-similar graphs, a unified treatment of Katsura and Nekrashevych C*-algebras

    Ruy Exel;Enrique Pardo

Frequent Co-Authors

Pere Ara
Pere Ara Autonomous University of Barcelona
Anatoly Vershik
Anatoly Vershik Saint Petersburg State University
Aidan Sims
Aidan Sims University of New South Wales
Ken Dykema
Ken Dykema Texas A&M University
George A. Elliott
George A. Elliott University of Toronto

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