Ruy Exel

2.7k total citations
53 papers, 1.0k citations indexed

About

Ruy Exel is a scholar working on Mathematical Physics, Algebra and Number Theory and Geometry and Topology. According to data from OpenAlex, Ruy Exel has authored 53 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Mathematical Physics, 37 papers in Algebra and Number Theory and 20 papers in Geometry and Topology. Recurrent topics in Ruy Exel's work include Advanced Operator Algebra Research (41 papers), Advanced Topics in Algebra (37 papers) and Algebraic structures and combinatorial models (15 papers). Ruy Exel is often cited by papers focused on Advanced Operator Algebra Research (41 papers), Advanced Topics in Algebra (37 papers) and Algebraic structures and combinatorial models (15 papers). Ruy Exel collaborates with scholars based in Brazil, Canada and United States. Ruy Exel's co-authors include Terry A. Loring, Marcelo Laca, Søren Eilers, Enrique Pardo, Pere Ara, Paolo Piccione, Mikhailo Dokuchaev, Chi–Keung Ng, Lisa Orloff Clark and Daniel Gonçalves and has published in prestigious journals such as Communications in Mathematical Physics, Lecture notes in mathematics and Transactions of the American Mathematical Society.

In The Last Decade

Ruy Exel

51 papers receiving 901 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ruy Exel Brazil	18	945	748	409	154	98	53	1.0k
Marcelo Laca Canada	19	946 1.0×	711 1.0×	384 0.9×	127 0.8×	98 1.0×	49	993
Jean Renault France	10	1.1k 1.2×	922 1.2×	353 0.9×	133 0.9×	75 0.8×	16	1.2k
Yasuo Watatani Japan	14	568 0.6×	452 0.6×	228 0.6×	109 0.7×	48 0.5×	73	631
Narutaka Ozawa Japan	19	962 1.0×	618 0.8×	423 1.0×	234 1.5×	70 0.7×	54	1.1k
Eberhard Kirchberg Germany	17	1.1k 1.2×	898 1.2×	275 0.7×	183 1.2×	47 0.5×	30	1.1k
Gennadi Kasparov United States	13	1.4k 1.5×	895 1.2×	560 1.4×	312 2.0×	42 0.4×	18	1.5k
Georges Skandalis France	19	1.2k 1.3×	860 1.1×	636 1.6×	180 1.2×	38 0.4×	38	1.3k
N. Christopher Phillips United States	18	965 1.0×	823 1.1×	323 0.8×	158 1.0×	46 0.5×	64	1.0k
Claude Schochet United States	13	745 0.8×	520 0.7×	386 0.9×	146 0.9×	68 0.7×	45	846
R. J. Archbold United Kingdom	13	561 0.6×	491 0.7×	136 0.3×	120 0.8×	49 0.5×	60	614

Countries citing papers authored by Ruy Exel

Since Specialization

Citations

This map shows the geographic impact of Ruy Exel's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ruy Exel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ruy Exel more than expected).

Fields of papers citing papers by Ruy Exel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ruy Exel. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ruy Exel. The network helps show where Ruy Exel may publish in the future.

Co-authorship network of co-authors of Ruy Exel

This figure shows the co-authorship network connecting the top 25 collaborators of Ruy Exel. A scholar is included among the top collaborators of Ruy Exel based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ruy Exel. Ruy Exel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Exel, Ruy, et al.. (2023). Exotic ideals in free transformation group C∗$\mathbf {C}^*$‐algebras. Bulletin of the London Mathematical Society. 55(3). 1489–1510. 1 indexed citations

Clark, Lisa Orloff, Ruy Exel, & Enrique Pardo. (2017). A generalized uniqueness theorem and the graded ideal structure of Steinberg algebras. Forum Mathematicum. 30(3). 533–552. 17 indexed citations

Ara, Pere & Ruy Exel. (2013). Dynamical systems associated to separated graphs, graph algebras, and paradoxical decompositions. Advances in Mathematics. 252. 748–804. 24 indexed citations

Lopes, Artur O., et al.. (2010). A Ruelle Operator for continuous time Markov Chains. São Paulo Journal of Mathematical Sciences. 4(1). 1–1. 4 indexed citations

Exel, Ruy. (2008). Hecke algebras for protonormal subgroups. Journal of Algebra. 320(5). 1771–1813. 9 indexed citations

Exel, Ruy. (2008). A new look at the crossed product of aC^*-algebra by a semigroup of endomorphisms. Ergodic Theory and Dynamical Systems. 28(3). 749–789. 14 indexed citations

Exel, Ruy, et al.. (2006). On the Singularities of the Exponential Map in Infinite Dimensional Riemannian Manifolds. Mathematische Annalen. 336(2). 247–267. 5 indexed citations

Armstrong, Scott N., Ken Dykema, Ruy Exel, & Hanfeng Li. (2004). On embeddings of full amalgamated free product C*–algebras. Proceedings of the American Mathematical Society. 132(7). 2019–2030. 9 indexed citations

Exel, Ruy. (2004). KMS States for generalized Gauge actions on Cuntz-Krieger algebras. Bulletin of the Brazilian Mathematical Society New Series. 35(1). 1–12. 15 indexed citations

10.

Exel, Ruy. (2003). Crossed-products by finite index endomorphisms and KMS states. Journal of Functional Analysis. 199(1). 153–188. 22 indexed citations

11.

Exel, Ruy. (2003). A new look at the crossed-product of a C^*-algebra by an endomorphism. Ergodic Theory and Dynamical Systems. 23(6). 1733–1750. 69 indexed citations

12.

Eilers, Søren & Ruy Exel. (2001). Finite dimensional representations of the soft torus. Proceedings of the American Mathematical Society. 130(3). 727–731. 6 indexed citations

13.

Exel, Ruy, et al.. (2001). Deformation quantization via Fell bundles. MATHEMATICA SCANDINAVICA. 89(1). 135–135. 4 indexed citations

14.

Exel, Ruy. (2000). Morita–Rieffel Equivalence and Spectral Theory for Integrable Automorphism Groups of C*-Algebras. Journal of Functional Analysis. 172(2). 404–465. 13 indexed citations

15.

Exel, Ruy. (2000). Partial representations and amenable fell bundles over free groups. Pacific Journal of Mathematics. 192(1). 39–63. 10 indexed citations

16.

Eilers, Søren, et al.. (1998). Morita equivalence for crossed products by Hilbert $C^\ast $-bimodules. Transactions of the American Mathematical Society. 350(8). 3043–3054. 46 indexed citations

17.

Elliott, George A., Ruy Exel, & Terry A. Loring. (1991). The soft torus III: The flip. Journal of Operator Theory. 26. 333–344. 4 indexed citations

18.

Exel, Ruy & Terry A. Loring. (1991). Invariants of almost commuting unitaries. Journal of Functional Analysis. 95(2). 364–376. 64 indexed citations

19.

Exel, Ruy & Terry A. Loring. (1989). Almost Commuting Unitary Matrices. Proceedings of the American Mathematical Society. 106(4). 913–913. 9 indexed citations

20.

Exel, Ruy. (1988). Maximal Subdiagonal Algebras. American Journal of Mathematics. 110(4). 775–775. 33 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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