Óscar Rojo

1.3k total citations
87 papers, 884 citations indexed

About

Óscar Rojo is a scholar working on Computational Theory and Mathematics, Geometry and Topology and Organic Chemistry. According to data from OpenAlex, Óscar Rojo has authored 87 papers receiving a total of 884 indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Computational Theory and Mathematics, 68 papers in Geometry and Topology and 27 papers in Organic Chemistry. Recurrent topics in Óscar Rojo's work include Graph theory and applications (64 papers), Matrix Theory and Algorithms (43 papers) and Synthesis and Properties of Aromatic Compounds (26 papers). Óscar Rojo is often cited by papers focused on Graph theory and applications (64 papers), Matrix Theory and Algorithms (43 papers) and Synthesis and Properties of Aromatic Compounds (26 papers). Óscar Rojo collaborates with scholars based in Chile, Portugal and Brazil. Óscar Rojo's co-authors include Ricardo L. Soto, Vladimir Nikiforov, María Robbiano, Domingos M. Cardoso, Enide Andrade, Raúl Jiménez, Julio Moro, Nair Maria Maia de Abreu, İvan Gutman and Vilmar Trevisan and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Computers & Mathematics with Applications and Linear Algebra and its Applications.

In The Last Decade

Óscar Rojo

80 papers receiving 838 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Óscar Rojo Chile	16	630	624	236	105	82	87	884
Changjiang Bu China	19	781 1.2×	383 0.6×	123 0.5×	52 0.5×	205 2.5×	96	1.1k
Jiang Zhou China	15	413 0.7×	334 0.5×	113 0.5×	51 0.5×	69 0.8×	128	810
Bit-Shun Tam Taiwan	16	542 0.9×	337 0.5×	91 0.4×	70 0.7×	88 1.1×	61	707
Yi-Zheng Fan China	20	716 1.1×	894 1.4×	345 1.5×	228 2.2×	49 0.6×	94	1.1k
José M. Rodrı́guez Spain	22	600 1.0×	1.1k 1.8×	178 0.8×	164 1.6×	26 0.3×	177	1.6k
Wai Chee Shiu Hong Kong	18	918 1.5×	723 1.2×	319 1.4×	219 2.1×	219 2.7×	185	1.3k
Ricardo L. Soto Chile	15	598 0.9×	289 0.5×	57 0.2×	42 0.4×	175 2.1×	73	716
A.M. Encinas Spain	14	264 0.4×	265 0.4×	93 0.4×	29 0.3×	68 0.8×	61	464
Ángeles Carmona Mejías Spain	16	335 0.5×	311 0.5×	93 0.4×	53 0.5×	83 1.0×	66	561
Adam W. Marcus United States	10	217 0.3×	127 0.2×	78 0.3×	210 2.0×	89 1.1×	14	575

Countries citing papers authored by Óscar Rojo

Since Specialization

Citations

This map shows the geographic impact of Óscar Rojo'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 Óscar Rojo with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Óscar Rojo more than expected).

Fields of papers citing papers by Óscar Rojo

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Óscar Rojo. 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 Óscar Rojo. The network helps show where Óscar Rojo may publish in the future.

Co-authorship network of co-authors of Óscar Rojo

This figure shows the co-authorship network connecting the top 25 collaborators of Óscar Rojo. A scholar is included among the top collaborators of Óscar Rojo 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 Óscar Rojo. Óscar Rojo 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

Rojo, Óscar, et al.. (2023). The generalized adjacency-distance matrix of connected graphs. Linear and Multilinear Algebra. 72(10). 1689–1708.

Nikiforov, Vladimir & Óscar Rojo. (2017). A note on the positive semidefiniteness of A(G). Linear Algebra and its Applications. 519. 156–163. 36 indexed citations

Nikiforov, Vladimir, et al.. (2017). On the A-spectra of trees. Linear Algebra and its Applications. 520. 286–305. 65 indexed citations

Andrade, Enide, et al.. (2015). On the Faria's inequality for the Laplacian and signless Laplacian spectra: A unified approach. Linear Algebra and its Applications. 472. 81–96. 8 indexed citations

Cardoso, Domingos M., Enide Andrade, María Robbiano, & Óscar Rojo. (2013). Eigenvalues of a H -generalized join graph operation constrained by vertex subsets. Linear Algebra and its Applications. 438(8). 3278–3290. 15 indexed citations

Rojo, Óscar. (2009). Spectra of copies of a generalized Bethe tree attached to any graph. Linear Algebra and its Applications. 431(5-7). 863–882. 7 indexed citations

Rojo, Óscar & María Robbiano. (2007). An explicit formula for eigenvalues of Bethe trees and upper bounds on the largest eigenvalue of any tree. Linear Algebra and its Applications. 427(1). 138–150. 32 indexed citations

Rojo, Óscar. (2007). A new algebra of Toeplitz-plus-Hankel matrices and applications. Computers & Mathematics with Applications. 55(12). 2856–2869. 4 indexed citations

Rojo, Óscar. (2006). The spectra of a graph obtained from copies of a generalized Bethe tree. Linear Algebra and its Applications. 420(2-3). 490–507. 15 indexed citations

10.

Rojo, Óscar. (2005). On the spectra of certain rooted trees. Linear Algebra and its Applications. 414(1). 218–243. 6 indexed citations

11.

Rojo, Óscar. (2005). The spectra of some trees and bounds for the largest eigenvalue of any tree. Linear Algebra and its Applications. 414(1). 199–217. 15 indexed citations

12.

Rojo, Óscar & Ricardo L. Soto. (2003). Existence and construction of nonnegative matrices with complex spectrum. Linear Algebra and its Applications. 368. 53–69. 20 indexed citations

13.

Rojo, Óscar, et al.. (2003). A note on the integer eigenvalues of the Laplacian matrix of a balanced binary tree. Linear Algebra and its Applications. 362. 293–300. 1 indexed citations

14.

Rojo, Óscar. (2002). The spectrum of the Laplacian matrix of a balanced binary tree. Linear Algebra and its Applications. 349(1-3). 203–219. 6 indexed citations

15.

Rojo, Óscar, et al.. (2001). Fast construction of a symmetric nonnegative matrix with a prescribed spectrum. Computers & Mathematics with Applications. 42(10-11). 1379–1391. 2 indexed citations

16.

Rojo, Óscar, et al.. (2001). A note on the construction of a positive oscillatory matrix with a prescribed spectrum. Computers & Mathematics with Applications. 41(3-4). 353–361. 3 indexed citations

17.

Rojo, Óscar, et al.. (2000). An always nontrivial upper bound for Laplacian graph eigenvalues. Linear Algebra and its Applications. 312(1-3). 155–159. 37 indexed citations

18.

Rojo, Óscar. (1999). Further bounds for the smallest singular value and the spectral condition number. Computers & Mathematics with Applications. 38(7-8). 215–228. 16 indexed citations

19.

Rojo, Óscar, et al.. (1995). Localization of eigenvalues in elliptic regions. Computers & Mathematics with Applications. 29(7). 3–11. 4 indexed citations

20.

Rojo, Óscar. (1977). On an optimization problem of Bellman. Journal of Mathematical Analysis and Applications. 61(1). 208–215.

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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