John Oprea

1.5k total citations
56 papers, 733 citations indexed

About

John Oprea is a scholar working on Mathematical Physics, Geometry and Topology and Algebra and Number Theory. According to data from OpenAlex, John Oprea has authored 56 papers receiving a total of 733 indexed citations (citations by other indexed papers that have themselves been cited), including 43 papers in Mathematical Physics, 37 papers in Geometry and Topology and 17 papers in Algebra and Number Theory. Recurrent topics in John Oprea's work include Homotopy and Cohomology in Algebraic Topology (43 papers), Geometric and Algebraic Topology (20 papers) and Advanced Topics in Algebra (16 papers). John Oprea is often cited by papers focused on Homotopy and Cohomology in Algebraic Topology (43 papers), Geometric and Algebraic Topology (20 papers) and Advanced Topics in Algebra (16 papers). John Oprea collaborates with scholars based in United States, United Kingdom and Germany. John Oprea's co-authors include Gregory Lupton, Daniel Tanré, Aleksy Tralle, Octav Cornea, Ivaïlo M. Mladenov, Yves Félix, Yuli B. Rudyak, Mark Grant, Michael Färber and John Walsh and has published in prestigious journals such as Lecture notes in mathematics, Transactions of the American Mathematical Society and American Mathematical Monthly.

In The Last Decade

John Oprea

52 papers receiving 664 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John Oprea United States	11	498	454	158	107	105	56	733
Shigeyuki Morita Japan	18	876 1.8×	753 1.7×	148 0.9×	64 0.6×	79 0.8×	70	1.0k
Michael Kapovich United States	20	1.1k 2.2×	833 1.8×	288 1.8×	101 0.9×	53 0.5×	73	1.3k
Zheng-Xu He United States	16	377 0.8×	154 0.3×	268 1.7×	100 0.9×	19 0.2×	37	755
Bruce Kleiner United States	22	1.1k 2.3×	733 1.6×	805 5.1×	199 1.9×	39 0.4×	62	1.4k
Garrett Stuck United States	9	203 0.4×	285 0.6×	91 0.6×	77 0.7×	39 0.4×	17	483
Barak Weiss Israel	17	351 0.7×	547 1.2×	84 0.5×	126 1.2×	44 0.4×	42	735
Étienne Ghys France	22	1.3k 2.7×	1.2k 2.6×	490 3.1×	212 2.0×	104 1.0×	54	1.6k
Jim Bryan United States	13	452 0.9×	329 0.7×	21 0.1×	35 0.3×	41 0.4×	32	563
Morton L. Curtis United States	12	247 0.5×	224 0.5×	63 0.4×	82 0.8×	51 0.5×	39	437
V. A. Zalgaller Russia	7	246 0.5×	101 0.2×	390 2.5×	98 0.9×	13 0.1×	20	582

Countries citing papers authored by John Oprea

Since Specialization

Citations

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

Fields of papers citing papers by John Oprea

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Oprea

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

Färber, Michael & John Oprea. (2024). Sequential parametrized topological complexity and related invariants. Algebraic & Geometric Topology. 24(3). 1755–1780. 1 indexed citations

Färber, Michael, et al.. (2024). Sequential topological complexity of aspherical spaces and sectional categories of subgroup inclusions. Mathematische Annalen. 391(3). 4555–4605.

Lupton, Gregory, et al.. (2022). Homotopy invariants and almost non-negative curvature. IrInSubria (University of Insubria).

Färber, Michael & John Oprea. (2019). Higher topological complexity of aspherical spaces. Topology and its Applications. 258. 142–160. 10 indexed citations

Lupton, Gregory, et al.. (2018). Parallel forms, co-Kahler manifolds and their models. IrInSubria (University of Insubria). 1 indexed citations

Oprea, John, et al.. (2015). Height functions on quaternionic Stiefel manifolds. TIB Repositorium. 32(1). 1–16.

Grant, Mark, Gregory Lupton, & John Oprea. (2015). New lower bounds for the topological complexity of aspherical spaces. Topology and its Applications. 189. 78–91. 7 indexed citations

Oprea, John, et al.. (2012). On Foxʼs m-dimensional category and theorems of Bochner type. Topology and its Applications. 159(5). 1448–1461. 2 indexed citations

Félix, Yves & John Oprea. (2008). Rational homotopy of gauge groups. Proceedings of the American Mathematical Society. 137(4). 1519–1527. 6 indexed citations

10.

Mladenov, Ivaïlo M., et al.. (2007). Unduloids and their geometry. Archivum Mathematicum. 43(5). 417–429. 14 indexed citations

11.

Allday, Christopher & John Oprea. (2006). A c-symplectic free s1-manifold with contractible orbits and cat = ½ dim. Proceedings of the American Mathematical Society. 134(2). 599–604. 1 indexed citations

12.

Cornea, Octav, Gregory Lupton, John Oprea, & Daniel Tanré. (2003). Lusternik-Schnirelmann Category. Mathematical surveys and monographs. 144 indexed citations

13.

Oprea, John & John Walsh. (2002). Quotient maps, group actions and Lusternik–Schnirelmann category. Topology and its Applications. 117(3). 285–305. 6 indexed citations

14.

Oprea, John. (2001). Category bounds for nonnegative Ricci curvature manifolds with infinite fundamental group. Proceedings of the American Mathematical Society. 130(3). 833–839. 6 indexed citations

15.

Oprea, John & Aleksy Tralle. (1998). Homotopy and geometry. 1 indexed citations

16.

Lupton, Gregory & John Oprea. (1995). Cohomologically Symplectic Spaces: Toral Actions and the Gottlieb Group. Transactions of the American Mathematical Society. 347(1). 261–261. 9 indexed citations

17.

Lupton, Gregory & John Oprea. (1995). Cohomologically symplectic spaces: toral actions and the Gottlieb group. Transactions of the American Mathematical Society. 347(1). 261–288. 30 indexed citations

18.

Oprea, John. (1995). Gottlieb groups, group actions, fixed points and rational homotopy. 4 indexed citations

19.

Lupton, Gregory & John Oprea. (1994). Symplectic manifolds and formality. Journal of Pure and Applied Algebra. 91(1-3). 193–207. 32 indexed citations

20.

Oprea, John. (1982). Contributions to rational homotopy theory /. OhioLink ETD Center (Ohio Library and Information Network). 1 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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