Leonard Tornheim

566 total citations
19 papers, 203 citations indexed

About

Leonard Tornheim is a scholar working on Computational Theory and Mathematics, Numerical Analysis and Mathematical Physics. According to data from OpenAlex, Leonard Tornheim has authored 19 papers receiving a total of 203 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Computational Theory and Mathematics, 3 papers in Numerical Analysis and 3 papers in Mathematical Physics. Recurrent topics in Leonard Tornheim's work include Matrix Theory and Algorithms (4 papers), Algebraic Geometry and Number Theory (3 papers) and Mathematical Approximation and Integration (2 papers). Leonard Tornheim is often cited by papers focused on Matrix Theory and Algorithms (4 papers), Algebraic Geometry and Number Theory (3 papers) and Mathematical Approximation and Integration (2 papers). Leonard Tornheim collaborates with scholars based in United States and Netherlands. Leonard Tornheim's co-authors include Douglas Waples, Harold M. Mooney, Ernesto Bolívar Rizzo Orellana, Robert Thrall, William James Adams and Louis V. Quintas and has published in prestigious journals such as Geochimica et Cosmochimica Acta, Econometrica and Technometrics.

In The Last Decade

Leonard Tornheim

13 papers receiving 149 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Leonard Tornheim United States	8	54	45	39	35	32	19	203
A. P. E. ten Kroode Netherlands	8	355 6.6×	10 0.2×	13 0.3×	177 5.1×	33 1.0×	11	445
Gideon Zwas Israel	11	7 0.1×	71 1.6×	102 2.6×	3 0.1×	21 0.7×	33	353
Hong‐Xu Li China	10	31 0.6×	46 1.0×	101 2.6×	4 0.1×	18 0.6×	39	374
B. Frank Jones United States	10	5 0.1×	128 2.8×	60 1.5×	6 0.2×	48 1.5×	14	581
B. L. Rozhdestvenskii	4	5 0.1×	22 0.5×	50 1.3×	14 0.4×	32 1.0×	18	335
Hennie De Schepper Belgium	13	13 0.2×	62 1.4×	26 0.7×	21 0.6×	34 1.1×	94	774
Pietro Majer Italy	10	58 1.1×	44 1.0×	14 0.4×	38 1.1×	4 0.1×	21	246
John Paine Australia	9	89 1.6×	177 3.9×	86 2.2×	39 1.1×	16 0.5×	17	406
Yu. I. Shokin Russia	6	17 0.3×	13 0.3×	46 1.2×	4 0.1×	17 0.5×	31	213
John C. Heideman United States	11	8 0.1×	68 1.5×	96 2.5×	56 1.6×	5 0.2×	35	340

Countries citing papers authored by Leonard Tornheim

Since Specialization

Citations

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

Fields of papers citing papers by Leonard Tornheim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Leonard Tornheim

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

All Works

Sort: Min cites: Since: Top N: Style:

19 of 19 papers shown

Waples, Douglas & Leonard Tornheim. (1978). Mathematical models for petroleum-forming processes: carbon isotope fractionation. Geochimica et Cosmochimica Acta. 42(5). 467–472. 23 indexed citations

Waples, Douglas & Leonard Tornheim. (1978). Mathematical models for petroleum-forming processes: n-paraffins and isoprenoid hydrocarbons. Geochimica et Cosmochimica Acta. 42(5). 457–465. 10 indexed citations

Tornheim, Leonard, et al.. (1975). Development of a community noise prediction model. The Journal of the Acoustical Society of America. 58(S1). S16–S16. 1 indexed citations

Tornheim, Leonard, et al.. (1970). Elements of Linear Programming.. American Mathematical Monthly. 77(9). 1027–1027. 4 indexed citations

Mooney, Harold M., et al.. (1966). A resistivity computation method for layered earth models. Geophysics. 31(1). 192–203. 61 indexed citations

Tornheim, Leonard. (1964). Convergence of Multipoint Iterative Methods. Journal of the ACM. 11(2). 210–220. 31 indexed citations

Tornheim, Leonard. (1963). Convergence in Nonlinear Regression. Technometrics. 5(4). 513–514. 1 indexed citations

Tornheim, Leonard. (1963). Convergence in Nonlinear Regression. Technometrics. 5(4). 513–513. 1 indexed citations

Tornheim, Leonard. (1961). Inversion of a complex matrix. Communications of the ACM. 4(9). 398–398. 4 indexed citations

10.

Thrall, Robert, et al.. (1959). Vector Spaces and Matrices.. American Mathematical Monthly. 66(2). 161–161. 2 indexed citations

11.

Thrall, Robert, et al.. (1959). Vector Spaces and Matrices. Econometrica. 27(3). 539–539. 1 indexed citations

12.

Thrall, Robert, et al.. (1957). Vector Spaces and Matrices. Physics Today. 10(11). 36–38. 17 indexed citations

13.

Tornheim, Leonard. (1956). Approximation by families of functions. Proceedings of the American Mathematical Society. 7(4). 641–643. 6 indexed citations

14.

Tornheim, Leonard. (1956). Approximation by Families of Functions. Proceedings of the American Mathematical Society. 7(4). 641–641. 1 indexed citations

15.

Tornheim, Leonard. (1955). Minimal basis and inessential discriminant divisors for a cubic field. Pacific Journal of Mathematics. 5(4). 623–631. 20 indexed citations

16.

Tornheim, Leonard. (1955). Approximation to irrationals by classes of rational numbers. Proceedings of the American Mathematical Society. 6(2). 260–264. 2 indexed citations

17.

Tornheim, Leonard. (1955). Asymmetric minima of quadratic forms and asymmetric Diophantine approximation. Duke Mathematical Journal. 22(2). 7 indexed citations

18.

Tornheim, Leonard. (1952). The Sylvester-Franke Theorem. American Mathematical Monthly. 59(6). 389–389. 3 indexed citations

19.

Tornheim, Leonard. (1952). Normed fields over the real and complex fields.. The Michigan Mathematical Journal. 1(1). 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.

Explore authors with similar magnitude of impact