User contributions
- 14:38, 11 January 2021 (diff | hist) . . (-1) . . m 1998 IMO Problems/Problem 3
- 11:35, 9 December 2020 (diff | hist) . . (+1,227) . . 2017 IMO Problems/Problem 2
- 15:04, 1 December 2020 (diff | hist) . . (+2) . . m Diophantine equation (→Sum of Fourth Powers)
- 21:33, 26 November 2020 (diff | hist) . . (+195) . . 1997 PMWC Problems/Problem T9
- 16:54, 19 November 2020 (diff | hist) . . (+852) . . 1963 IMO Problems/Problem 4