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ORCIDDaniel H. Ullman
Person information
- affiliation: George Washington University, Department of Mathematics, Washington, DC, USA
Other persons with the same name
- Daniel Ullman 0002 — Brown University, Providence, RI, USA (and 1 more)
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2020 – today
- 2024
[j84]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(1): 76-86 (2024)- [j83]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(2): 170-180 (2024) - [j82]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(3): 262-272 (2024) - [j81]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(4): 353-363 (2024) - [j80]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(5): 445-455 (2024) - [j79]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(6): 536-546 (2024) - [j78]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(7): 629-639 (2024) - [j77]Daniel H. Ullman, Paul Zeitz:
The Eighty-Fourth William Lowell Putnam Mathematical Competition. Am. Math. Mon. 131(8): 647-661 (2024) - [j76]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 131(8): 722-731 (2024) - 2023
- [j75]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(1): 86-95 (2023) - [j74]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(2): 187-196 (2023) - [j73]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(3): 285-294 (2023) - [j72]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(4): 385-394 (2023) - [j71]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(5): 485-494 (2023) - [j70]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(6): 587-596 (2023) - [j69]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(7): 679-688 (2023) - [j68]Daniel H. Ullman, Paul Zeitz:
The Eighty-Third William Lowell Putnam Mathematical Competition. Am. Math. Mon. 130(8): 695-707 (2023) - [j67]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(8): 765-778 (2023) - [j66]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(9): 862-872 (2023) - [j65]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 130(10): 952-962 (2023) - 2022
- [j64]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(1): 86-95 (2022) - [j63]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(2): 186-195 (2022) - [j62]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon:
Problems and Solutions. Am. Math. Mon. 129(3): 285-294 (2022) - [j61]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(4): 385-394 (2022) - [j60]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(5): 486-495 (2022) - [j59]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(6): 587-596 (2022) - [j58]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(7): 685-694 (2022) - [j57]Daniel H. Ullman, Paul Zeitz:
The Eighty-Second William Lowell Putnam Mathematical Competition. Am. Math. Mon. 129(8): 703-716 (2022) - [j56]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(8): 785-794 (2022) - [j55]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(9): 886-895 (2022) - [j54]Daniel H. Ullman, Daniel J. Velleman, Stan Wagon, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 129(10): 985-994 (2022) - 2021
- [j53]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(1): 88-96 (2021) - [j52]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(2): 178-186 (2021) - [j51]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(3): 276-284 (2021) - [j50]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and solutions. Am. Math. Mon. 128(4): 376-384 (2021) - [j49]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(5): 467-475 (2021) - [j48]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(6): 563-571 (2021) - [j47]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and solutions. Am. Math. Mon. 128(7): 658-666 (2021) - [j46]Mark Krusemeyer, Daniel H. Ullman, Paul Zeitz:
The Eighty-First William Lowell Putnam Mathematical Competition. Am. Math. Mon. 128(8): 675-686 (2021) - [j45]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(8): 755-763 (2021) - [j44]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(9): 856-864 (2021) - [j43]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 128(10): 946-954 (2021) - 2020
- [j42]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(1): 85-93 (2020) - [j41]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions (with the collaboration of Paul Bracken, Ezra A. Brown Zachary Franco Christian Friesen László Lipták Rick Luttmann Frank B. Miles Lenhard Ng Kenneth Stolarsky Richard Stong Stan Wagon Lawrence Washington Elizabeth Wilmer Fuzhen Zhang and Li Zhou). Am. Math. Mon. 127(2): 179-187 (2020) - [j40]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(3): 274-282 (2020) - [j39]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(4): 372-380 (2020) - [j38]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(5): 461-469 (2020) - [j37]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and solutions. Am. Math. Mon. 127(6): 563-571 (2020) - [j36]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(7): 659-667 (2020) - [j35]Mark Krusemeyer, Daniel H. Ullman:
The Eightieth William Lowell Putnam Mathematical Competition. Am. Math. Mon. 127(8): 675-687 (2020) - [j34]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and solutions. Am. Math. Mon. 127(8): 752-761 (2020) - [j33]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and solutions. Am. Math. Mon. 127(9): 852-860 (2020) - [j32]Daniel H. Ullman, Daniel J. Velleman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 127(10): 944-952 (2020)
2010 – 2019
- 2019
- [j31]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(1): 82-90 (2019) - [j30]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West, Paul Bracken:
Problems and Solutions. Am. Math. Mon. 126(2): 180-188 (2019) - [j29]Daniel H. Ullman, Daniel J. Velleman:
Differences of Bijections. Am. Math. Mon. 126(3): 199-216 (2019) - [j28]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(3): 280-288 (2019) - [j27]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West, Paul Bracken:
Problems and Solutions. Am. Math. Mon. 126(4): 370-378 (2019) - [j26]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West, Paul Bracken:
Problems and Solutions. Am. Math. Mon. 126(5): 468-476 (2019) - [j25]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(6): 562-570 (2019) - [j24]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(7): 658-666 (2019) - [j23]Mark Krusemeyer, Daniel H. Ullman:
The Seventy-Ninth William Lowell Putnam Mathematical Competition. Am. Math. Mon. 126(8): 675-687 (2019) - [j22]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(8): 755-763 (2019) - [j21]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(9): 850-858 (2019) - [j20]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 126(10): 946-954 (2019) - 2018
- [j19]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(1): 81-89 (2018) - [j18]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(3): 276-283 (2018) - [j17]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(4): 370-378 (2018) - [j16]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(5): 466-475 (2018) - [j15]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(6): 562-570 (2018) - [j14]Gerald A. Edgar, Daniel Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(7): 660-668 (2018) - [j13]Mark Krusemeyer, Daniel H. Ullman:
The Seventy-Eighth William Lowell Putnam Mathematical Competition. Am. Math. Mon. 125(8): 675-688 (2018) - [j12]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(8): 755-763 (2018) - [j11]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(9): 851-859 (2018) - [j10]Gerald A. Edgar, Daniel H. Ullman, Douglas B. West:
Problems and Solutions. Am. Math. Mon. 125(10): 944-952 (2018) - 2014
- [j9]Daniel Ullman:
Review: Math on Trial: How Mathematics Is Used and Abused in the Courtroom. By Leila Schneps and Coralie Colmez, Basic Books, New York, 2013, xi+256 pp., ISBN 978-0-465-03292-1, $26.99. Am. Math. Mon. 121(5): 463-466 (2014)
2000 – 2009
- 2002
- [j8]Amir Pirnazar, Daniel H. Ullman:
Girth and fractional chromatic number of planar graphs. J. Graph Theory 39(3): 201-217 (2002)
1990 – 1999
- 1995
- [j7]Michael Larsen, James Gary Propp, Daniel Ullman:
The fractional chromatic number of mycielski's graphs. J. Graph Theory 19(3): 411-416 (1995) - [j6]Edward R. Scheinerman, Ann N. Trenk, Daniel Ullman:
On point-halfspace graphs. J. Graph Theory 20(1): 19-35 (1995) - 1994
- [j5]Motakuri V. Ramana, Edward R. Scheinerman, Daniel Ullman:
Fractional isomorphism of graphs. Discret. Math. 132(1-3): 247-265 (1994) - 1993
- [j4]Aviezri S. Fraenkel, Edward R. Scheinerman, Daniel Ullman:
Undirected Edge Geography. Theor. Comput. Sci. 112(2): 371-381 (1993) - [j3]Walter Stromquist
, Daniel Ullman:
Sequential Compounds of Combinatorial Games. Theor. Comput. Sci. 119(2): 311-321 (1993) - 1992
- [j2]Robin Pemantle, James Gary Propp, Daniel Ullman:
On Tensor Powers of Integer Programs. SIAM J. Discret. Math. 5(1): 127-143 (1992) - 1991
- [j1]Rodica Simion, Daniel Ullman:
On the structure of the lattice of noncrossing partitions. Discret. Math. 98(3): 193-206 (1991)
Coauthor Index
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