C. R. Putnam

1.8k total citations
91 papers, 1.2k citations indexed

About

C. R. Putnam is a scholar working on Applied Mathematics, Mathematical Physics and Computational Theory and Mathematics. According to data from OpenAlex, C. R. Putnam has authored 91 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Applied Mathematics, 40 papers in Mathematical Physics and 37 papers in Computational Theory and Mathematics. Recurrent topics in C. R. Putnam's work include Holomorphic and Operator Theory (36 papers), Matrix Theory and Algorithms (32 papers) and Spectral Theory in Mathematical Physics (29 papers). C. R. Putnam is often cited by papers focused on Holomorphic and Operator Theory (36 papers), Matrix Theory and Algorithms (32 papers) and Spectral Theory in Mathematical Physics (29 papers). C. R. Putnam collaborates with scholars based in United States and Japan. C. R. Putnam's co-authors include Kevin F. Clancey, Aurel Wintner and Neal H. McCoy and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Mathematical Analysis and Applications and Transactions of the American Mathematical Society.

In The Last Decade

C. R. Putnam

75 papers receiving 571 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
C. R. Putnam United States	17	728	609	421	324	159	91	1.2k
Peter Fillmore Canada	16	745 1.0×	756 1.2×	571 1.4×	631 1.9×	220 1.4×	38	1.4k
R. G. Douglas United States	20	1.5k 2.0×	1.2k 2.0×	503 1.2×	755 2.3×	316 2.0×	51	2.1k
Arne Beurling United States	15	838 1.2×	561 0.9×	203 0.5×	94 0.3×	458 2.9×	18	1.3k
C. E. Rickart United States	8	295 0.4×	637 1.0×	240 0.6×	613 1.9×	205 1.3×	17	989
Allen Devinatz United States	18	397 0.5×	459 0.8×	278 0.7×	64 0.2×	64 0.4×	50	763
Carl Pearcy United States	25	1.6k 2.2×	1.3k 2.2×	783 1.9×	964 3.0×	302 1.9×	128	2.3k
Hideki Kosaki Japan	21	826 1.1×	1.2k 1.9×	258 0.6×	658 2.0×	358 2.3×	63	1.6k
Shôichirô Sakai United States	17	227 0.3×	759 1.2×	192 0.5×	689 2.1×	224 1.4×	52	1.1k
J. M. G. Fell United States	17	263 0.4×	1.1k 1.8×	204 0.5×	717 2.2×	526 3.3×	27	1.4k
Bernard Russo United States	17	425 0.6×	742 1.2×	129 0.3×	552 1.7×	200 1.3×	56	956

Countries citing papers authored by C. R. Putnam

Since Specialization

Citations

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

Fields of papers citing papers by C. R. Putnam

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. R. Putnam. 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 C. R. Putnam. The network helps show where C. R. Putnam may publish in the future.

Co-authorship network of co-authors of C. R. Putnam

This figure shows the co-authorship network connecting the top 25 collaborators of C. R. Putnam. A scholar is included among the top collaborators of C. R. Putnam 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 C. R. Putnam. C. R. Putnam 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

Putnam, C. R.. (1977). Spectra and measure inequalities. Transactions of the American Mathematical Society. 231(2). 519–529. 2 indexed citations

Putnam, C. R.. (1974). The role of zero sets in the spectra of hyponormal operators. Proceedings of the American Mathematical Society. 43(1). 137–137. 2 indexed citations

Putnam, C. R.. (1974). Spectra of polar factors of hyponormal operators. Transactions of the American Mathematical Society. 188(0). 419–428. 16 indexed citations

Putnam, C. R.. (1974). The Role of Zero Sets in the Spectra of Hyponormal Operators. Proceedings of the American Mathematical Society. 43(1). 137–137. 2 indexed citations

Putnam, C. R.. (1974). Invariant subspaces of certain subnormal operators. Journal of Functional Analysis. 17(3). 263–273. 5 indexed citations

Putnam, C. R.. (1972). Hyponormal operators having real parts with simple spectra. Transactions of the American Mathematical Society. 172. 447–447.

Clancey, Kevin F. & C. R. Putnam. (1972). The local spectral behavior of completely subnormal operators. Transactions of the American Mathematical Society. 163. 239–239. 15 indexed citations

Putnam, C. R., et al.. (1972). The Local Spectral Behavior of Completely Subnormal Operators. Transactions of the American Mathematical Society. 163. 239–239. 14 indexed citations

Clancey, Kevin F. & C. R. Putnam. (1972). Normal parts of certain operators. Journal of the Mathematical Society of Japan. 24(2). 5 indexed citations

10.

Putnam, C. R.. (1969). Absolute Continuity and Generalized Reynolds Operators. Indiana University Mathematics Journal. 19(3). 263–270. 1 indexed citations

11.

Putnam, C. R.. (1968). The Spectra of Operators Having Resolvents of First-Order Growth. Transactions of the American Mathematical Society. 133(2). 505–505. 7 indexed citations

12.

Putnam, C. R.. (1965). On the spectra of semi-normal operators. Transactions of the American Mathematical Society. 119(3). 509–523. 21 indexed citations

13.

Putnam, C. R.. (1961). A Note on Non-Negative Matrices. Canadian Journal of Mathematics. 13. 59–62. 3 indexed citations

14.

Putnam, C. R., et al.. (1958). On the Spectra of Group Commutators. Proceedings of the American Mathematical Society. 9(3). 360–360. 1 indexed citations

15.

Putnam, C. R., et al.. (1958). On the spectra of group commutators. Proceedings of the American Mathematical Society. 9(3). 360–362. 5 indexed citations

16.

Putnam, C. R.. (1957). On square roots of normal operators. Proceedings of the American Mathematical Society. 8(4). 768–769. 13 indexed citations

17.

Putnam, C. R.. (1956). On Commutators and Jacobi Matrices. Proceedings of the American Mathematical Society. 7(6). 1026–1026. 9 indexed citations

18.

Putnam, C. R.. (1956). On commutators and Jacobi matrices. Proceedings of the American Mathematical Society. 7(6). 1026–1030. 11 indexed citations

19.

Putnam, C. R.. (1954). On the spectra of commutators. Proceedings of the American Mathematical Society. 5(6). 929–931. 6 indexed citations

20.

Putnam, C. R.. (1952). On the Unboundedness of the Essential Spectrum. American Journal of Mathematics. 74(3). 578–578. 4 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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