报名期间：从 即日起 到 无限期
上课期间：从 2020-09-14 到 2021-01-18

• Chapter 1 - Chapter 4 Lecture notes
• Chapter 1 (added notes), 8pp
• Chapter 1 (short note), 1p
• Chapter 4, The Twelvefold Way (note)
• Exercise 1
• Exercise 2, PIE, (book)
• Exercise 3, Recurrences, GF, (book)
• Exercise 4, Catalan, Stirling, (book)
• Exercises 2,3 PIE and GF (extra)
• 200916 Preliminaries
• 200914 Equivalence Relations
• 201019 Binomial classroom notes
• 安心文宣ver2.0