The 81st William Lowell Putnam Mathematical Competition, originally scheduled for December 5, 2020, was postponed due to the coronavirus pandemic. It eventually took place in an unofficial capacity on February 20, 2021. Students self-proctored the exam, and no prizes were awarded this year. Nevertheless, the solutions were graded and students were informed of their own scores, but there will be no public announcement of scores or winners. There were 1593 undergraduates, from 360 institutions across the United States and Canada, who participated in the competition. The competition is held annually, under the auspices of the Mathematical Association of America. It is supported by the William Lowell Putnam Prize Fund for the Promotion of Scholarship, an endowment established by Elizabeth Lowell Putnam in 1927 in memory of her husband. The Problems Committee for the 81st competition consisted of Andrew Bernoff, Harvey Mudd College; Robin Pemantle (chair), University of Pennsylvania; and Richard Stong, Institute for Defense Analyses. In addition, Karl Mahlburg of Susquehanna International Group contributed problems for the competition.

The 82nd William Lowell Putnam Mathematical Competition took place on December 4, 2021. There were 2975 undergraduates who participated in the competition at 427 institutions across the United States and Canada. The competition is held annually, under the auspices of the Mathematical Association of America. It is supported by the William Lowell Putnam Prize Fund for the Promotion of Scholarship, an endowment established by Elizabeth Lowell Putnam in 1927 in memory of her husband. The Problems Committee for the 82th competition consisted of Andrew Bernoff (chair), Harvey Mudd College; Karl Mahlburg, Susquehanna International Group; and Richard Stong, Center for Communications Research. Additional proposed problems were contributed by Gabriel Carroll, University of Toronto, and Andrew Granville, University of Montreal.

[1] Andrews, G. E. (2011). Concave compositions. Electron. J. Combin. 18(2): P6. doi.org/10.37236/2002 [2] Andrews, G. E., Garvan, F. G. (1988). Dyson’s crank of a partition. Bull. Amer. Math. Soc. 18(2): 167– 171. doi.org/10.1090/S0273-0979-1988-15637-6 [3] Andrews, G. E., Newman, D. (2020). The minimal excludant in integer partitions. J. Integer Seq. 23(2): 20.2.3. [4] Askey, R. (1999). The work of George Andrews: a Madison perspective. Sém. Lothar. Combin. 42: B42b. [5] Dyson, F. J. (1944). Some guesses in the theory of partitions. Eureka. 8: 10–15. [6] Garvan, F. G. (1988). New combinatorial interpretations of Ramanujan’s partition congruences mod 5, 7, and 11. Trans. Amer. Math. Soc. 305(1): 47–77. doi.org/10.1090/S0002-9947-1988-0920146-8 [7] Shen, Y. (2019). On partitions classified by smallest missing part. Ramanujan J. 49(2): 411–419. doi.org/10.1007/s11139-018-0072-1

The 80th William Lowell Putnam Mathematical Competition took place on December 7, 2019. There were 4229 undergraduates who participated in the competition at 570 institutions across the United Stat...

The 80th William Lowell Putnam Mathematical Competition took place on December 7, 2019. There were 4229 undergraduates who participated in the competition at 570 institutions across the United Stat...