高等代数

微课推荐：乐乐老师的网络课堂

其他内容待完善……

Graph theory

• Lecture 1 Basic notions (1)
• Lecture 2 Basic notions (2)
• Lecture 3 Graph parameters and trees
• Lecture 4 Cayley’s formula and Prüfer code
• Lecture 5 Cayley’s formula: A second proof
• Lecture 6 Vertex connectivity
• Lecture 7 Edge connectivity
• Lecture 8 Menger’s theorem
• Lecture 9 Eulerian and Hamiltonian cycles
• Lecture 10 Matchings
• Lecture 11 Kőnig’s theorem and Tutte’s theorem
• Lecture 12 Planar graphs
• Lecture 13 Platonic Solids
• Lecture 14 Graph colouring I
• Lecture 15 Graph colouring II