Ralph Kopperman

2.0k total citations
61 papers, 1.2k citations indexed

About

Ralph Kopperman is a scholar working on Geometry and Topology, Computational Theory and Mathematics and Mathematical Physics. According to data from OpenAlex, Ralph Kopperman has authored 61 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Geometry and Topology, 24 papers in Computational Theory and Mathematics and 15 papers in Mathematical Physics. Recurrent topics in Ralph Kopperman's work include Advanced Topology and Set Theory (18 papers), Advanced Algebra and Logic (17 papers) and Digital Image Processing Techniques (14 papers). Ralph Kopperman is often cited by papers focused on Advanced Topology and Set Theory (18 papers), Advanced Algebra and Logic (17 papers) and Digital Image Processing Techniques (14 papers). Ralph Kopperman collaborates with scholars based in United States, United Kingdom and Mexico. Ralph Kopperman's co-authors include Paul R. Meyer, E. Khalimsky, T. Yung Kong, Homeira Pajoohesh, Steve Matthews, Michael A. Bukatin, Richard G. Wilson, Vladimir Kovalevsky, Y. Mukhin and Krzysztof Ciesielski and has published in prestigious journals such as Annals of the New York Academy of Sciences, Fuzzy Sets and Systems and American Mathematical Monthly.

In The Last Decade

Ralph Kopperman

59 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ralph Kopperman United States 18 571 559 439 372 151 61 1.2k
S. A. Naimpally Canada 17 103 0.2× 342 0.6× 575 1.3× 257 0.7× 309 2.0× 80 872
Czesław Byliński Poland 4 45 0.1× 372 0.7× 205 0.5× 54 0.1× 106 0.7× 4 734
Michel Las Vergnas France 14 89 0.2× 726 1.3× 381 0.9× 23 0.1× 140 0.9× 53 1.2k
Salvador Romaguera Spain 27 81 0.1× 519 0.9× 2.6k 5.9× 845 2.3× 320 2.1× 191 2.9k
Manor Mendel Israel 15 72 0.1× 326 0.6× 148 0.3× 46 0.1× 140 0.9× 41 676
N. Sauer Canada 12 61 0.1× 532 1.0× 272 0.6× 52 0.1× 105 0.7× 47 893
Vladimir Pestov Canada 16 91 0.2× 207 0.4× 655 1.5× 43 0.1× 590 3.9× 76 1.0k
Robert E. Jamison United States 16 48 0.1× 718 1.3× 343 0.8× 42 0.1× 75 0.5× 64 995
Michel Schellekens Ireland 13 31 0.1× 221 0.4× 625 1.4× 175 0.5× 95 0.6× 53 808
D. G. Larman United Kingdom 16 65 0.1× 350 0.6× 313 0.7× 21 0.1× 192 1.3× 65 927

Countries citing papers authored by Ralph Kopperman

Since Specialization
Citations

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

Fields of papers citing papers by Ralph Kopperman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ralph Kopperman

This figure shows the co-authorship network connecting the top 25 collaborators of Ralph Kopperman. A scholar is included among the top collaborators of Ralph Kopperman 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 Ralph Kopperman. Ralph Kopperman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kopperman, Ralph & Homeira Pajoohesh. (2018). Representing topologies using partially ordered semigroups. Topology and its Applications. 249. 135–149. 1 indexed citations
2.
Holland, W. Charles, Ralph Kopperman, & Homeira Pajoohesh. (2012). Intrinsic generalized metrics. Algebra Universalis. 67(1). 1–18. 5 indexed citations
3.
Good, Chris, et al.. (2010). Interpolating functions. Topology and its Applications. 158(4). 582–593. 1 indexed citations
4.
Bukatin, Michael A., Ralph Kopperman, Steve Matthews, & Homeira Pajoohesh. (2009). Partial Metric Spaces. American Mathematical Monthly. 116(8). 708–718. 106 indexed citations
5.
Kopperman, Ralph, Stephen G. Matthews, & Homeira Pajoohesh. (2009). Completions of partial metrics into value lattices. Topology and its Applications. 156(8). 1534–1544. 9 indexed citations
6.
Kopperman, Ralph & Jimmie Lawson. (2004). Bitopological and topological ordered k-spaces. Topology and its Applications. 146-147. 385–396. 4 indexed citations
7.
Kopperman, Ralph, et al.. (2004). Bounded complete models of topological spaces. Topology and its Applications. 139(1-3). 285–297. 18 indexed citations
8.
Kopperman, Ralph & Richard G. Wilson. (2003). On the role of finite, hereditarily normal spaces and maps in the genesis of compact Hausdorff spaces. Topology and its Applications. 135(1-3). 265–275. 2 indexed citations
9.
Ciesielski, Krzysztof, et al.. (2002). Polish spaces, computable approximations, and bitopological spaces. Topology and its Applications. 119(3). 241–256. 8 indexed citations
10.
Henriksen, Melvin, et al.. (2000). Oxtoby's pseudocompleteness revisited. Topology and its Applications. 100(2-3). 119–132. 1 indexed citations
11.
Kopperman, Ralph, et al.. (1999). Smyth completion as bicompletion. Topology and its Applications. 91(2). 169–180. 4 indexed citations
12.
Kopperman, Ralph, et al.. (1997). Continuity spaces: Reconciling domains and metric spaces. Theoretical Computer Science. 177(1). 111–138. 50 indexed citations
13.
Kopperman, Ralph. (1995). Asymmetry and duality in topology. Topology and its Applications. 66(1). 1–39. 52 indexed citations
14.
Kong, T. Yung, Ralph Kopperman, & Paul R. Meyer. (1992). Guest editors' preface to special issue on digital topology. Topology and its Applications. 46(3). 173–179. 8 indexed citations
15.
Khalimsky, E., Ralph Kopperman, & Paul R. Meyer. (1990). Computer graphics and connected topologies on finite ordered sets. Topology and its Applications. 36(1). 1–17. 267 indexed citations
16.
Kopperman, Ralph, et al.. (1989). Papers on general topology and related category theory and topological algebra. New York Academy of Sciences eBooks. 9 indexed citations
17.
Kopperman, Ralph & Paul R. Meyer. (1989). Cardinal invariants of bitopological spaces. Časopis pro pěstování matematiky. 114(4). 374–380. 5 indexed citations
18.
Kopperman, Ralph & Paul R. Meyer. (1989). An internal characterization of uniform weight. Topology and its Applications. 31(3). 253–258. 2 indexed citations
19.
Khalimsky, E., Ralph Kopperman, & Paul R. Meyer. (1989). Boundaries in digital planes. International Journal of Stochastic Analysis. 3(1). 27–55. 43 indexed citations
20.
Kopperman, Ralph. (1972). Model theory and its applications. Allyn and Bacon eBooks. 8 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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