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- 03:25, 29 May 2020 diff hist +8 Chapter 2: An ancient theorem and a modern question →Essential
- 03:08, 29 May 2020 diff hist 0 Chapter 2: An ancient theorem and a modern question →Essential
- 03:04, 29 May 2020 diff hist −8 Chapter 2: An ancient theorem and a modern question →Essential
- 03:02, 29 May 2020 diff hist +6 Chapter 2: An ancient theorem and a modern question →Essential
- 02:54, 29 May 2020 diff hist −4 Chapter 2: An ancient theorem and a modern question →Essential
- 02:10, 29 May 2020 diff hist −1 Chapter 2: An ancient theorem and a modern question →Essential
- 02:02, 29 May 2020 diff hist +1 Chapter 2: An ancient theorem and a modern question →Essential
- 01:57, 29 May 2020 diff hist −4 Chapter 2: An ancient theorem and a modern question →Essential