Daniel H. Ullman

910 total citations
35 papers, 441 citations indexed

About

Daniel H. Ullman is a scholar working on Computational Theory and Mathematics, Discrete Mathematics and Combinatorics and Geometry and Topology. According to data from OpenAlex, Daniel H. Ullman has authored 35 papers receiving a total of 441 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Computational Theory and Mathematics, 6 papers in Discrete Mathematics and Combinatorics and 5 papers in Geometry and Topology. Recurrent topics in Daniel H. Ullman's work include Advanced Graph Theory Research (8 papers), Graph Labeling and Dimension Problems (4 papers) and Mathematics and Applications (3 papers). Daniel H. Ullman is often cited by papers focused on Advanced Graph Theory Research (8 papers), Graph Labeling and Dimension Problems (4 papers) and Mathematics and Applications (3 papers). Daniel H. Ullman collaborates with scholars based in United States, Israel and Russia. Daniel H. Ullman's co-authors include Edward R. Scheinerman, Rodica Simion, James Propp, Michael Larsen, Motakuri V. Ramana, Walter Stromquist, Aviezri S. Fraenkel, Daniel E. Loeb, Bertram F. Malle and Robin Pemantle and has published in prestigious journals such as American Psychologist, American Mathematical Monthly and Theoretical Computer Science.

In The Last Decade

Daniel H. Ullman

21 papers receiving 394 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Daniel H. Ullman United States	8	255	172	106	70	65	35	441
Ryan R. Martin United States	13	213 0.8×	212 1.2×	130 1.2×	92 1.3×	57 0.9×	54	417
Steve Butler United States	11	179 0.7×	113 0.7×	150 1.4×	46 0.7×	28 0.4×	55	375
Neil J. Calkin United States	11	240 0.9×	177 1.0×	121 1.1×	137 2.0×	54 0.8×	48	504
Michael Krivelevich Israel	12	253 1.0×	242 1.4×	119 1.1×	45 0.6×	40 0.6×	28	374
András Sebö France	11	593 2.3×	119 0.7×	161 1.5×	29 0.4×	106 1.6×	27	709
K. B. Reid United States	10	227 0.9×	106 0.6×	81 0.8×	38 0.5×	38 0.6×	45	310
Nabil Kahalé United States	11	224 0.9×	104 0.6×	70 0.7×	133 1.9×	208 3.2×	30	533
Svante Linusson Sweden	10	137 0.5×	201 1.2×	77 0.7×	42 0.6×	16 0.2×	40	334
Robert C. Brigham United States	14	438 1.7×	81 0.5×	164 1.5×	34 0.5×	109 1.7×	40	555
Vadim E. Levit Israel	12	328 1.3×	181 1.1×	238 2.2×	27 0.4×	72 1.1×	81	541

Countries citing papers authored by Daniel H. Ullman

Since Specialization

Citations

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

Fields of papers citing papers by Daniel H. Ullman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Daniel H. Ullman. 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 Daniel H. Ullman. The network helps show where Daniel H. Ullman may publish in the future.

Co-authorship network of co-authors of Daniel H. Ullman

This figure shows the co-authorship network connecting the top 25 collaborators of Daniel H. Ullman. A scholar is included among the top collaborators of Daniel H. Ullman 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 Daniel H. Ullman. Daniel H. Ullman 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

1.

Ullman, Daniel H., Daniel J. Velleman, Stan Wagon, & Douglas B. West. (2024). Problems and Solutions. American Mathematical Monthly. 131(9). 814–824.

2.

Ullman, Daniel H., Daniel J. Velleman, Stan Wagon, & Douglas B. West. (2023). Problems and Solutions. American Mathematical Monthly. 130(10). 952–962.

3.

Ullman, Daniel H., Daniel J. Velleman, Stan Wagon, & Douglas B. West. (2023). Problems and Solutions. American Mathematical Monthly. 130(6). 587–596.

4.

Ullman, Daniel H., Daniel J. Velleman, Stan Wagon, & Douglas B. West. (2023). Problems and Solutions. American Mathematical Monthly. 130(7). 679–688.

5.

Ullman, Daniel H., et al.. (2022). Problems and Solutions. American Mathematical Monthly. 129(3). 285–294. 1 indexed citations

6.

Ullman, Daniel H., et al.. (2022). Problems and Solutions. American Mathematical Monthly. 129(4). 385–394.

7.

Ullman, Daniel H., et al.. (2020). PROBLEMS AND SOLUTIONS. American Mathematical Monthly. 127(9). 852–860.

8.

Edgar, Gerald A., Daniel H. Ullman, & Douglas B. West. (2019). Problems and Solutions. American Mathematical Monthly. 126(3). 280–288.

9.

Ullman, Daniel H. & Daniel J. Velleman. (2019). Differences of Bijections. American Mathematical Monthly. 126(3). 199–216. 2 indexed citations

10.

Ullman, Daniel H., et al.. (2002). Girth and fractional chromatic number of planar graphs. Journal of Graph Theory. 39(3). 201–217. 8 indexed citations

11.

Ullman, Daniel H., et al.. (2002). Girth and fractional chromatic number of planar graphs. Journal of Graph Theory. 39(3). 201–201.

12.

Loeb, Daniel E., et al.. (1995). Richman games. arXiv (Cornell University). 10 indexed citations

13.

Scheinerman, Edward R., Ann N. Trenk, & Daniel H. Ullman. (1995). On point‐halfspace graphs. Journal of Graph Theory. 20(1). 19–35. 1 indexed citations

14.

Ramana, Motakuri V., Edward R. Scheinerman, & Daniel H. Ullman. (1994). Fractional isomorphism of graphs. Discrete Mathematics. 132(1-3). 247–265. 27 indexed citations

15.

Fraenkel, Aviezri S., Edward R. Scheinerman, & Daniel H. Ullman. (1993). Undirected edge geography. Theoretical Computer Science. 112(2). 371–381. 20 indexed citations

16.

Stromquist, Walter & Daniel H. Ullman. (1993). Sequential compounds of combinatorial games. Theoretical Computer Science. 119(2). 311–321. 7 indexed citations

17.

Ullman, Daniel H.. (1992). More on the Four-Numbers Game. Mathematics Magazine. 65(3). 170–174. 3 indexed citations

18.

Simion, Rodica & Daniel H. Ullman. (1991). On the structure of the lattice of noncrossing partitions. Discrete Mathematics. 98(3). 193–206. 92 indexed citations

19.

Ullman, Daniel H.. (1987). A generalization of a theorem of Atkinson to noninvariant measures. Pacific Journal of Mathematics. 130(1). 187–193. 2 indexed citations

20.

Ullman, Daniel H., et al.. (1982). Researchers' ethical conscience: Debriefing from 1960 to 1980.. American Psychologist. 37(8). 972–973. 2 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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